Over at the One Degree blog, there is a coverage of a panel from the SXSW interactive festival, during which the panelists were asked to vote on the worst social media campaigns in 2007. Amongst the panelists were bloggers like Jeff Jarvis and Steve Hall. I have to admit, I didn’t hear about all of these campaigns, but some of the bigger blunders (Walmart, Coke/Mentos and Sony) I did hear about, of course. I wonder what will be next for this year? You would assume, that (we) marketers learn…