OH MY GOSH! I just downloaded this and put GetSocial Tool Bars in my posts and I put a Share This Button (in a text widget) on the right sidebar of our blog. It was SO SO easy to do! I tested every link to the other social sharing sites and they all worked! If you want to check it out and see what it looks like on my blog, you can visit:
Mind Body Soul Patio Weblog
Thank you Hillel! This is a brilliant tool for wordpress.com bloggers. I sent you my $5!