I'm only dipping my toes in here; I used to participate in the Lost thread here, but people were bad about including massive spoilers regarding future episodes in their posts, so I don't go there anymore. I only read at the TiVo community, which has strict rules on spoilerization. The last episode is discussed at
LOST Finale - 5/25, and is up to 668 posts at the moment. This thread contains a link to a larger version of that pink page (as well as everything else hidden on that website), and a link to another website that obsesses over all the possible meanings of the Numbers. One odd Numbers item is that all of those are numbers retired by the NY Yankees.