Yes I think social media like Facebook has killed the website forum. As long as it doesn't cost me too much and people use it, I won't be closing this forum any time soon.
On major difference is there is a level of anonymity on a website forum where most people on Facebook use real names because they not only interact with people regarding their music or politics or whatever, they also stay in touch with Grandma and post pics of their kids. Yes you can have multiple accounts on FB but I don't think most people do that.
On top of all this, other than Poltergeist, what is really going on in the Bunnymen world? Not much, and the stuff that has, The Fountain, Mac's solo, lackluster short tours, not many people here seem to like it much. I predict this forum will outlast the Bunnymen.