Mark, Regarding the facebook buttons a share/tweet button would be good for people to share the actual page instead of clicking through to your page and liking your group.
I'd guess the aim is to get the product out there and having people actually share the page or tweet the page should do that better than just following your page.
ah i see, so 'share on facebook' and 'share on twitter' buttons as opposed to 'like' & follow.
I'll get that changed, good point