A pair of items for your attention:
1. In our ongoing efforts to Make Flickr BetterTM, we’re introducing two additional limits: the new maximum number of contacts is 3,000 contacts (good luck with that), and each photo on Flickr can have a maximum of 75 tags.
We love your freedom, but, in this particular case, limiting these things will actually improve the system performance, making pages load faster across the site for everyone and cut out some unwelcome spammy behaviors. Both of these new limits apply equally to free and pro account members.
If you have questions or comments about these changes, we’ve opened a topic in Flickr Help.
2. On March 20th, 2007 we’ll be discontinuing the old email-based Flickr sign in system. From that point on, everyone will have to use a Yahoo! ID to sign in to Flickr.
We’re making this change now to simplify the sign in process in advance of several large projects launching this year, but some Flickr features and tools already require Yahoo! IDs for sign in — like the mobile site at m.flickr.com or the new Yahoo! Go program for mobiles, available at http://go.yahoo.com.
If you still sign in using the email-based Flickr system (here), you can make the switch at any time in the next few months, from today till the 15th. (After that day, you’ll be required to merge before you continue using your account.) To switch, start at this page: http://flickr.com/account/associate/
Complete details and answers to most common questions are available here: http://flickr.com/help/signin/
If you have questions or comments about signing in with a Yahoo! ID, speak up!