So you have a handle on Facebook and Twitter. You may even blog a little. Think you have it covered? Sorry – not even close. At NettResults we break social media sites out into three levels:
Tier 1: Register and engage
Del.icio.us
DocStoc
Business week's Business Exchange
FaceBook
Flickr
FriendFeed
LinkedIn
Scribd
SlideShare
StumbleUpon
Technorati
Twitter
YouTube (also Vimeo, Viddler, Revver & Yahoo video)
Tier 2: Set up branded profiles, use as warranted:
Digg
Google Groups
Windows Live Space
Yahoo Groups
Tier 3: Claim your name and monitor
Bedo
Brightkite
Friendster
Gather
Identi.ca
Imeem
Meetup
Multiply
MySpace
New York Times (TimesPeople, NewsWeek)
Ning
Orkut
Piscasa
Plurk
Spoke
Tribe.net
The hard way: go to each site and do what you have to do.
The easy way: call a reputable PR agency such as NettResults and that agency set up and engage social media sites for you.