I thought I'd share the good experiences of online retailers rather than harking on about the bad ones all the time.
I bought a B-grade Shuttle SN41G2 off Tekheads saving £50ish IIRC. It stated the mobo had been replaced (DOA return?). When I received it there were a fair few parts missing, nothing truly important (screws, cables, shim, 3.5" cover etc). I contacted them via email, since it was B-grade I expected them to tell me that's what I should expect, something even less useful or simply not reply at all - in line with plenty of online retailers. However I received a rapid response apologising and they quickly mailed me back saying they'd managed to scrape together most of the parts for me (even offered to order the rest from Shuttle). They did this even though it was probably the original customer who returned the DOA or DFA (dead from abuse) who had neglected to return all of the parts. Not only that but they sent it all to me at no cost to myself, next day! Top class customer service, again. I'd heard they were good and was very pleasently surprised.
BTW I made no mention of forums or feedback! Anyone else have experiences that exceeded their expectation?