This plugin initially seemed decent... added the Google +1 to the site.
I had it up for a few weeks before I noticed that it added this sneaky little ad at the bottom of each page in a font that was hard to see: "Google plus one provided by free online casino" with a link to http://online-casino.eu.com/.
There was no option for turning this off. I found this to be a very deceptive way of embedding a link on my site, which I didn't appreciate. I removed it immediately and gave a 1-star ranking.