1. El sistema que a mi m’ha tocat analitzar, ha estat el de flickr

Flickr resulta ser; casi amb seguretat el millor portal per compartir imatges a la xarxa possiblement de tots els existents. És una manera de mostrar les imatges d’un mateix a la resta d’internautes. A més a més, anteriorment les contes d’usuari eren de pagament; però des de la seva obertura i per tant la gratuïtat, la llibertat d’exploració, és innacabable.

Algunes de les característiques que ens ofereix flickr; són les de:

- Descàrrega d’imatges d’altres usuaris a no ser que les tinguin bloquejades amb total llibertat.

- La possibilitat d’organitzar les pròpies imatges en grups o etiquetar-les segons ens interessi.

- L’opció de formar part de grups dins de flickr, on poder compartir imatges segons temàtiques o interessos.

- També la possibilitat de veure mitjançant mapes, on van ser fetes les fotografies pròpies i dels altres usuaris, ubicant-les en un mapa mundi.

- Estar informat d’altres descàrregues i novetats que han fet usuaris dels quals en volem estar informats quan fan algun canvi o incorporen alguna novetat.

- Una interessant opció, és la de poder desar missatges dins una mateixa imatge; a part dels habituals comentaris de les imatges dels altres usuaris. Aquesta opció, però, només està habilitada per als usuaris que formen part d’un mateix grup.

- Possibilitat de fer preguntes a altres usuaris sobre el funcionament de la pàgina a http://www.flickr.com/help/forum/

2. La llicència i distribució de flickr; la he extret literalment de les seves bases a http://www.flickr.com/guidelines.gne; i és la següent:

                  Flickr Community Guidelines

Flickr accounts are intended for personal use, for our members to share photos that they themselves have taken.

The following Community Guidelines are here to help you understand what it means to be a member of Flickr. Don’t forget that your use of Flickr is subject to these Guidelines and our Terms of Use.

What to do

• Do play nice.
  We’re a community of many types of people, who all have the right to feel comfortable and who may not think what you think, believe what you believe or see what you see. So, be polite and respectful in your interactions with other members.
• Do upload photos that you’ve taken.
  Respect the copyright of others. This means don’t steal photographs that other people have taken and pass them off as your own. (That’s what favorites are for.)
• Do moderate your content.
  You need to take responsibility for ensuring that what you upload is appropriately flagged. If your judgment proves to be poor, we’ll moderate your account to match appropriate ratings for safe search and/or content type and send you a warning.
• Do link back to Flickr when you post your photos elsewhere.
  The Flickr service makes it possible to post images hosted on Flickr to outside web sites. However, pages on other web sites that display images hosted on flickr.com must provide a link from each photo back to its photo page on Flickr.
• Do enjoy Flickr!
  See the world through others’ eyes, participate, find your muse, and expand your horizons!

What not to do

Here’s the deal: In most circumstances, we like to give second chances, so we’ll send you a warning if you step across any of the lines listed below. Subsequent violations can result in account termination without warning.

• Don’t upload anything that isn’t yours.
  This includes other people’s photographs and/or stuff that you’ve collected from around the Internet. Accounts that consist primarily of such collections may be terminated at any time.
• Don’t forget the children.
  Take the opportunity to filter your content responsibly. If you would hesitate to show your photos to a child, your mum, or Uncle Bob, that means it needs to be filtered. So, ask yourself that question as you upload your photos and moderate accordingly. If you don’t, it’s likely that one of two things will happen. Your account will be reviewed then either moderated or terminated by Flickr staff.
• Don’t show nudity in your buddy icon.
  If we find you doing that, we’ll remove it and send you a warning. If we find you doing it again, we’ll terminate your account.
• Don’t upload content that is illegal or prohibited.
  If we find you doing that, your account will be deleted and we’ll take appropriate action, which may include reporting you to the authorities.
• Don’t vent your frustrations, rant, or bore the brains out of other members.
  Flickr is not a venue for you to harass, abuse, impersonate, or intimidate others. If we receive a valid complaint about your conduct, we’ll send you a warning or terminate your account.
• Don’t be creepy.
  You know the guy. Don’t be that guy.
• Don’t use your account to host web graphics like logos and banners.
  Your account will be terminated if we find you using it to host graphic elements of web page designs, icons, smilies, buddy icons, forum avatars, badges, and other non-photographic elements on external web sites.
• Don’t use Flickr for commercial purposes.
  Flickr is for personal use only. If we find you selling products, services, or yourself through your photostream, we will terminate your account. Any other commercial use of Flickr, Flickr technologies (including APIs, FlickrMail, etc), or Flickr accounts must be approved by Flickr. For more information on leveraging Flickr APIs, please see our Services page. If you have other open questions about commercial usage of Flickr, please feel free to contact us.

Here are some other things to keep in mind:

Other People (their content, their behavior)
You will see all sorts of things on Flickr, some of which may offend you. If you are offended by a photo you can either click away from the photo or you can mark it as poorly moderated by clicking on the “Flag this photo” link on a photo page under “Additional Information”. If you think there’s immediate cause for concern, you can report content and/or someone’s behavior to Flickr staff.

Copyright Infringement
If you see your photographs in another member’s photostream, don’t panic. This is probably just a misunderstanding and not malicious. A good first step is to contact them and politely ask them to remove it. If that doesn’t work, please file a Notice of Infringement with the Yahoo! Copyright Team who will take it from there.

You may be tempted to post an entry in our public forum about what’s happening, but that’s not the best way to resolve a possible copyright problem. We don’t encourage singling out individuals or their photos in our public forum.

In Conclusion
We’ve crafted these guidelines to ensure that everyone within the community has the experience they want. We’re all in this together so it’s important that you understand the importance of moderating your content responsibly. If you don’t feel that you can abide by our Community Guidelines as outlined above, maybe Flickr isn’t for you.

If you ever have any questions or comments, we’d love to hear from you. Please feel free to drop us a line through Flickr Help by Email.

The Flickreenos
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3. Tecnologies utilitzades

http://www.flickr.com/tools/

4. Valoració

Des del meu punt de vista, veig el servei de flickr molt bó, ja que és un banc d’imatges molt gran on poder, a part de penjar les pròpies imatges si som usuaris; la possibilitat de cercar imatges per temàtiques mitjançant un buscador molt bó del propi sistema. Ens busca totes les imatges que incorporen el nom que li demanem en el moment en que donem a l’opció de búsqueda. Ex: si donem a l’opció que ens busqui la paraula “blue”; ens buscarà totes les frases que incorporin aquesta paraula, ja sigui desde “blue sky”, a “blue car” o per exemple “blue table”.

Jo el definiria, com el diccionari de les imatges amb nom.