I installed this plugin today, and I liked the way it worked and the flexibility in configuration, but one BIG problem, in my opinion: it automatically changed my RSS feed into a non-formatted excerpt (very short excerpt, no links or photos) with no link to the article and a big list of social buttons at the bottom.
I disabled the plugin right away, and gave it a 3 star rating. If this bug was fixed, I could recommend it, but to me this is a deal-breaker -- especially because there are no settings anywhere for RSS feed and this plugin shouldn't be interacting with or altering RSS settings.
Here's a post on Aakash's forum about it: http://www.aakashweb.com/forum/wp-socializer-f22/feed-excerpt-problem-t132.html
Looks like he's planning to fix it, but it hasn't been fixed yet.