As my main passion is 54mm, none of the sites mentioned above really cater to what I’m looking for. It’s the problem of being a niche within a niche, I suppose. Having said this, I still check TMP daily – there are still many good people there, and though it saddens me to admit, questions posted there still tend to get the most conversation going. I agree, though, that it is withering.
LAF is quite wonderful, though hugely focused on 28mm. I’ve picked up some wonderful information there. Honestly I love it here at TWW, though I think the site is still a-birthing, and it will be interesting to see how things develop over the next year or two. The knowledge base here is very deep, and I love that.
I don’t do Facebook (though I have no problem with those who enjoy it). Google can be incredibly helpful.