Most corporations are backing into developing a social media presence just because it's being demanded by their managements when they read the headline: 93% of Americans want Companies to have presence on Social Media Sites.
Valleywag notes the social media manager at GM admits she doesn't quite see the ROI of social media-izing their cars:
"It's hard to put a specific dollar value on this, but it's something we have to do," said Natalie Johnson, GM (NYSE: GM)'s social media manager
From GM Set to Relaunch Social Media Site - Information Week
All the bells and whistles of a social network - including wikis, videos and podcasts - for a small group of social media oriented GM car owners...
A mom's social network devoted to bleach!
Yes, lots of folks comment on the utility of kitty litter! (h/t ReadWriteWeb)
And in July, Mashable published a list of 35 more corporate social media - oriented sites with varying degrees of creativity and utility.