Overselling isn't a huge issue on such a small scale operation IMO.
Sure but it's important to consider. He says he hosts 35 servers or something, if all of them used atleast 400mb of RAM, which is entirely plausible, he'd be in the embarrassing situation where he has to apologise to
paying clients, accepting he failed to understand resource exhaustion, not speccing a good enough node.
Maybe my head is too in the real world, this is just a small operation on BL after all.
How is having more than enough ram a bad idea?
Clearly you either haven't read the last few posts, or you don't understand.