Agreed. Facebook is becoming an integral part of any brand's marketing presence, whether your brand sells cars, pimple cream, or anything else.
Would Facebook afford any functionality that is not available on this forum? Not many. Does it give this site a lot more exposure? It could, if it's properly managed. And there's the rub.
When we started tweeting this site some months ago, I tweeted every new article, and every featured puzzle. However, as near as I can determine, none of those tweets was re-tweeted or commented on. I also created a Twitter Twibe, but, again, nobody joined in. So, I let the latter die out.