It's still rude to post, jeez. Like I said, the reason we say that is because it's rude and it's just plain stupid to say.
Why does everything have to be in a goddamn megathread. It doesn't really loving matter. well, except for my little pony, but you know what I mean...
A lot of things are rude to post, but that doesn't usually stop anyone (see example in last post). So... give that argument a rest.
Megathreads exist because they keep a lot of people in the same place. I barely check offtopic ever, unless there's a thread I'm watching. I always check the computer megathread, though, because that's a thread where I know I can give advice and help out, as well as present some of my own problems.