The last time Flickr tried this there was such a backlash that they supported both the old Flickr IDs and corporate overlord ones. But that was then, and this is now...
The Flickr News blog just announced that as of March 15th, the only access to your Flickr account will be via a Yahoo! ID. So, the last holdouts in denial of the acquisition will either have to quit the service or link to a Yahoo! ID. This official thread has been created to voice your concerns \ questions to the Flickr staff and community.
We're told that this change is in preparation for some large projects later this year (ohhh - anyone have any ideas??). We've seen this requirement already with the recent updates to Flickr Mobile and Yahoo! Go that only allow Yahoo! accounts.
The same post also mentions the addition of a couple of limits:
- Maximum number of Contacts will be 3000
- Maximum number of Tags per picture will be 75