I wasn’t 100% happy with the wording of their terms though.
To participate in Flickr pro, you must have a valid Yahoo! ID and, solely if you have not received a free offer or gift for a specific number of days of Flickr pro (â€œFree pro Periodâ€), you will also need to provide other information, such as your credit card and billing information (your “Registration Data”). If you do not have a Yahoo! ID, you will be prompted to complete the registration process for it before you can register for Flickr pro. In consideration of your use of Flickr pro, you agree to: (a) provide true, accurate, current and complete information about yourself and (b) maintain and promptly update the Registration Data to keep it true, accurate, current and complete. If you provide any information that is untrue, inaccurate, not current or incomplete, or Flickr has reasonable grounds to suspect that such information is untrue, inaccurate, not current or incomplete, Flickr has the right to suspend or terminate your account and delete any information or content therein without liability to Flickr.
The “provide true, accurate, current and complete information about yourself” is only contextually limited to “credit card” and “billing information”; it could also plausibly be read as covering the more general Flickr user profile, on which I’ve every right to omit various bits of information (Missing isn’t broken). The billing system also let me have the choice of storing credit card info or re-entering it again next time it’s used. So it isn’t really clear what they’re asking for here. If my buddy icon doesn’t show enough grey hair, is that inaccurate? :) I guess they’re really focussed on contact details, in which case, it’s best to say so.
I signed up anyways. The Flickr API and the RDF-oriented Perl backup library make it a more reliable option for my photos than my own little Ruby scripts ever were. Back 2-3 years ago I maintained the fantasy that I’d manage my own photos and their metadata; the big reason I switched to Flickr was the commenting/social side. It’s just too hard for per-person sites to maintain that level of interactivity and community (unless you’re super famous or beautiful or both). And a photo site without comments and community, for me, is kind of boring. For decentralists … perhaps some combination of extended RSS feed plus OpenID for comments could come closer these days; but before OpenID, I couldn’t ever see a way for commenting and annotation to be massmarket-friendly in a decentralised manner. And, well, also no need to be grudging: Flickr is a great product. I’ve definitely had my money’s worth…