I need an example of a company that has their own account on a social networking site?

[Daphne]

In case you don't know, giant companies and corporations have their own Facebook and Twitter account.

Have you heard about how Twitter has helped Dell, for instance, in increasing their sales? Dell reported last year their sales tripled just because of Twitter.

I have no doubt with this since Twitter has become a great and powerful marketing tool nowadays. Other success stories as well as advice and tips on this breakthrough can be found here:
http://www.MyTwitterMoneyTree.com

Hope this helps.