Sociable appears to be one of the best WP social sharing plugins available, but just found a weird bug if Skyscraper is enabled alongside the classic plugin.
For some reason the Sociable plugin automatically overwrites what's in the css file and changes the title font size to a tiny "10" for every post. This happens on the main post page and on each individual post page as well.
However, once I disable Skyscraper, it goes back to normal. Thought I'd bring it to your attention.