Andy has setup a WIKI with a Google Maps plugoin that lets Mountain Bikers add their recommendations for places to stay. I’ve added the one’s I’ve used although not the crap one in Llangurig (maybe I should say something to deter people going there) that Tyrrell, Chilly and I stayed at when we did the Trans Cambrian Trail.
Here’s the link to the AAAAG. You need to register to use the WIKI, find the place on Google Maps, centre the location of the B&B or guest house inte map window and then use the question mark symbol to get the coordinates, copy these, then edit the page code, paste the coordinates in and add a description (and if relevant a hyperlink) and save. It’s pretty simple to do really. I know that I’ll use it in future to find people’s recommendations of where to stay.