This page is updated as I discover new social media sites. The list in in each category is ranked alphabetically rather than by popularity to be fair with all of the sites. I will leave the "rating" up to you. It I have omitted or miscategorized a site please contact me. Also please let me know if you find a site that is not longer in service so I can take it off the list.

This list is updated frequently so please do not copy the list and publish it elsewhere (I've already seen several sites that have copied the entire list).  I put a lot of time and effort into finding and checking each entry in the list. Do feel free to link to the list so that your readers and visitors can view the most up to date listings. Thanks Allen

263 sites - updated March 24, 2008

Social Aggregation - 18 sites

DigFoot

Friendfeed

Iminta

Linkriver

mEgo (beta)

Multiply

MyLifeBrand (beta)

Profilactic

Profil.es

Readr

Second Brain (beta)

shyftr (social feed reading sharing)

Socialmarker

socialthing! (beta invitation only)

Socialurl

Soup.io

Spokeo

Social Bookmarking - 68 sites

A1 Webmarks

All My Favorites

Ask.com My Stuff

Backflip

BlinkList

BlinkPro (req. paid account)

Bibsonomy (books and literature)

Blogmarks

Bookmark Tracker

Buddymarks

ButterFly

Citeulike

Chipmark

Cluztr

CoComment (comment tracking)

Cogenz (business & enterprise)

Connectbeam (business & enterprise)

Complore

Connotea

del.icio.us

de.lirio.us

diigo

ez4u

Faves

Favoritoo

Feed Me Links

Folkd

Foxmarks

FreeLink.org

Fungow

Furl

GetBoo

Google Bookmarks

i89.us

iKeepBookmarks

jaanix

Jumptags

LinkaGoGo

Linkroll

Linktopia

Lists of Bests

Live Favorites

Ma.gnolia

Mister Wong

Mobileo (mobile bookmarks)

MyBookmarks

MyFavoritesOnline (free and paid service)

MyHQ (simple text based)

MyLinkVault

MyVmarks

Netvouz

OYAX

Plum (beta)

Pocket (doesn't like IE7 only Firefox, Camino and Flock supported)

Rawsugar

Simpy

Startaid

StumbleUpon

Spurl

Swik (open source software bookmarks)

Symbaloo

Taggly

Tagza

Wirefan

Yahoo My Web

Yattle (bookmarking & micro blogging)

Yoono

ZigTag (private beta)

Zurpy

Social Events, Invitations, Review and Opinion Sites - 16 sites

Ask 500 People (beta)

43 People (who do you want to meet?)

43 Places (social travel)

43 Things (social lists and goals)

Crusher

Dopplr (business travel)

Evite

Groovr

MyPunchBowl

Renkoo

Socializr

thisnext (product recommendation)

tickle

TripAdvisor

Upcoming

Yelp

Social Gaming - 9 sites

360 Voice

Bungie.net

Curse

Game Spot

Hello Kitty Online (beta)

Kongregate

MyGamerCard

Mytopia

Xfire

Social Micro Blogging - 9 sites

Glogster

Jaiku

Pownce

Streem

Tumblr

Twitter

Utterz (beta - mobile blogging)

Zannel

Zimbio

Social Networking - 46 sites

Baby Spot (parents and children)

Bebo

Beliefnet

BlackPlanet

BlinkBits

Boxxet

Bring Light (charities)

Cafemom (slow site)

Capazoo

Change.org (charities)

classmates

Clipmarks

Consumating

esnips

Facebook

Fanpop (beta - fan related)

Fark

Friendster

fubar (online bar / happy hour)

Gabbr

Gather

HerOrbit (women)

Hi5

HiveLive

I Beat You

LinkedIn

Mashable (communities)

Mobicue (mobile social networking)

MyBlogLog (blogging community)

MySpace

My Yearbook

Ning

Orkut

Otavo

Pickzo

Reunion

Searchles

Songpull (songwriters)

Squidoo

Tagged

Thingfo (build communities)

Totspot (beta for mothers and babies)

WhyGoSolo

xanga

Yahoo 360

Yuku (communities)

(see also music and video below)

Social News - 23 sites

Digg

Dotspotter (celebrity)

eBaum's World

Health Ranker

Ka-Boom-it

Mashable

Mixx

Newsvine

Now Public

open topix

PlugIM

Popularo (beta)

Propeller (was Netscape)

Reddit

Sphinn

Shoutwire

Slashdot (I added this because of the firehouse voting system)

Sugarloving

Tailrank (follow blogs - aggregator)

Technorati (blog - news - aggregator)

Tiinker (beta - news aggregator - learns what you like or don't like)

Yahoo buzz

Y Combinator

Social Media Customized Homepages - Content Builders - 10 sites

BricaBox

eBay My World

Friendster

iGoogle

My AOL

My MSN

Pageflakes

Second Brain

Vox

Windows Live Spaces

Social Media (General - Unclassified - Misc) - 15 sites

30daytags

ClaimID (OpenID consolidator & manager)

Danogo (has several services)

Favorite Social Media Wiki

Helpalot (charities)

Howcast (how to video)

Instructables (Do it Yourself - DIY)

Jellyfish (shopping)

Listable (beta)

Mahalo (human powered search)

MemoToo (mobile data management - req. paid account)

MyWebDesktop

searchles (search + circles (social))

Topicle (community drive search)

TweeterBoard (twitter conversation analytics)

Twittervision

Social Video, Image, Books and Music, etc. - 47 sites

All Consuming (books and media)

Blip.tv (beta)

Break

Crackle

Dabble

deviantART (art)

Dragonfly

ffwd (beta)

Flickr

Flixster

Fotolog (photo micro blogging)

Funny or Die

FUZZ (music)

Heavy

hulu (beta)

iLike

Last.fm

Library Thing (books)

me.dium

MetaCafe

MP3.com

Mugshot

Odeo (mp3's)

Orangutag (TV related)

Pandora (internet radio)

Picasa

Pickle (photo and video sharing)

Polar Rose

QIK (streaming video)

RedBubble (art and community))

RockBand (warning resizes your browser window (that really sucks))

Sevenload (photo and video)

Shelfari (books)

Slide

Tioti (television related)

TV.com

Twixtr (twitter for images)

Veoh

Viddler

Vimeo

vi.sualize.us (bookmarking for images)

vodpod

Webshots

Yahoo Live

YouTube

Zoomr

Zune.net

Virtual Social - 2 sites

Koinup

Secondlife

If you know of a site not listed, please contact me, also if you find a bad link or out of date link let me know.

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