Top List of Microblogging Sites

List of Microblogging Sites
Microblogs "allow users to exchange small elements of content such as short sentences, individual images, or video links"these small messages are sometimes called micro-posts. Find here list of top 10 Micro blogging Sites with their google page rank.

1. twitter.com (Alexa Rank : 10 , PR : 10)
2. tumblr.com (Alexa Rank : 31 , PR : 8)
3. meetme.com (Alexa Rank : 1281 , PR : 5)
4. posterous.com (Alexa Rank : 1528 , PR : 8)
5. friendfeed.com (Alexa Rank : 1644 , PR : n/a)
6. plurk.com (Alexa Rank : 1721 , PR : 8)
7. yammer.com (Alexa Rank : 5131 , PR : 7)
8. identi.ca (Alexa Rank : 8160 , PR : 8)
9. dipity.com (Alexa Rank : 18912 , PR : 7)
10. bentio.com (Alexa Rank : 20196 , PR : 5)