Have you had good experiences of ranking with retweets?

[Ex2]

I was reading some seomoz posts last week and for a long time ago they are making some experiences with social medias.

I agree that facebook share is more powerful than retweets but also is harder to get it.

I would like to know if you have any GOOD experiences with Twitter or Facebook in your SEO campaigns.

I got one:

I got 20 retweets per day since last week, now my keyword is ranking at 2º positon.

What about you?

Thanks

[MarieHaynes]

Right now I'm watching Rand's webinar on the future of linkbuilding.  I just got to the point where he talks about an experiment where they showed two identical pages of a website that served the purpose of fighting hunger in Sierra Leone.   The way I understand it, SEOMoz asked people to link to page A and tweet about page B.  The page that had tweets ended up outranking the site with links!

That's pretty interesting.