Sgt_Kickaxe - 8:29 am on May 3, 2012 (gmt 0)
Twitter and Facebook have been embraced by the establishment, you may have noticed that they both receive free publicity on many TV commercials and print ads for example. Google does not so I'd suggest sticking with the big two that are established and readily recognizable, unless you have unlimited resources to push ALL social media.
example: Want to talk to Shaquille O'neal directly? Twitter is your place because it's his. Diesel!