I joined a while ago and frankly there really wasn't a lot of useful manuals in there. I didn't know if my spam count went up or not but I went in there looking for a suzuki GS750 (early) manual and came out empty handed.
They seem to have a couple manuals I am looking for. I registered with a not often used email address and got a reply that I had to approve receiving info from them. I have yet to respond to the confirmation email. The site was all in good English so the Romania thing kind of threw me.
i keep an email just for these occasions so i'm not worried about spam. and if you ever look for a free cb350 manual you may find somthing in on the level of a clymer but this is the service manual from honda and long out of print.
the site limits the number of downloads you can make in a week and if you start and cancel one it counts that as a download.