You can put a "Share" button on any website with HTML access using http://www.addtoany.com/ It allows people to share your page with almost every sharing service listed. It is also one of my favorite WordPress plug-ins but works on static pages too. There is nothing better than FREE viral traffic from people sharing your site.
it is good, but better is "add this" because have more services, more often is updated with new bookmarking service, and faster loading, I replaced on all my sites with add this widget for sharing because of those reasons and few more...
