I respectfully disagree. Because we have no major advertising campaign or other entry point most sharing of articles and getting people interested in the community is 'peer-to-peer' i.e. someone shares an interesting article with their friends or sends a friend a specific article they may be interested in. Facebook is an ideal medium for doing this as people of all social groups use it and it is a recognised format.

I personally have introduced many friends to LW via this method, and it is the primary way that people of college age communicate and pass on information. I don't think I'm particularly unusual in that my friends share, re-post and discuss articles on political and scientific topics with great frequency.

Even if we don't use the 'like' button, there are some changes that would make it easier to share. Aesthetically, currently if I post an article link I get an ugly text preview of less wrong tagline, rather than a summary/beginning of the article or a logo. This leaves us with a credibility gap when compared to other 'mainstream' news sites. [If someone can make the necessary changes to fix this issue I offer 100 of my karma]