Been playing with lot's of share buttons, what looks good, what doesn't yadda, yadda...
This site seems to have a ton of options, choices, custom colors, formats, ability to put in just certain pages, etc...
Done a few edits, some looks like crap, some turned out pretty good (I am terrible at custom coding - FYI)
www.shareaholic.com , opened a free account, played around with setting, and placing their snippet codes in various places. They have some really good looking styles...
anyways, thought some pro's in here can add some friendly advice to this post on placing like in forums, groups, events, etc...