For anyone using pellets, who misses PelletHeads, but doesn't know where else to go, a number of the previous administrators and moderators have set up a new site. I joined a few days ago, and found myself very welcome, although currently I am the only UK pin in their Pellet owners map.
The URL is http://www.pelletfan.com/ - it is very much like the previous site. They didn't wish to appear to be in competition with the other site, but as that site appears to have gone dark, I thought it wasn't innappropiate to post a link here.