Auth Tokens & Unlinked YouTube Accounts

http://apiblog.youtube.com/2011/08/auth-tokens-unlinked-youtube-accounts.html

That contains some important information for developers using AuthSub
or OAuth. Existing tokens that were generated for YouTube accountsthat were not linked to Google Accounts will become invalid on
Wednesday, August 31.

There are a number of important details in the post explaining exactlywhat that means, so please give it a read.

Cheers,
-Jeff Posnick, YouTube API Team
groups.google.com/group/youtube-api-gdata | apiblog.youtube.com |
@YouTubeDev