List of Websites similar to Facebook.com?

I am sooooo bored with Facebook! Can you name some other "social networks" like Facebook.com?

Google is your friend for these kinda things, but I will post some anyway:

plus.google.com
www.stumbleupon.com
www.digg.com
del.icio.us
www.technorati.com
www.twitter.com
www.pinterest.com
www.sconex.com
www.xanga.com
www.migente.com
www.mocospace.com
www.sconex.com
www.friendster.com
www.tag.com
www.hi5.com
www.meebo.com
www.bebo.com
www.Youtube.com
www.student.com
www.yuwie.com
www.myyearbook.com
www.hi5.com
www.tagged.com

Click to expand...

...there are a ton more, anybody want to share more?