High PR Microblogging Sites

Here are the some of Micro-blogging sites list, which are useful to increase traffic in your website.

1. Twitter.com 
2. Tumblr.com 
3. Dipity.com 
4. Posterous.com 
5. Friendfeed.com 
6. Plurk.com 
7. Yammer.com 
8. Flattr.com 
9. Meetme.com 
10. Bentio.com 
11. Blip.pl 
12. Identi.ca 
13. Meemi.com 
14. Plerb.com 
15. Twitxr.com 
16. Tout.com 
17. Weiboenglish.com 
18. Rememble.com 
19. Heello.com 
20. Hictu