>>19
I, for one, necropost all the time. Sometimes I bring back a thread that had 5 posts and it ends up with 50. Sometimes I make a thread and it gets no replies for months, and then someone else bumps it and it thrives. The depth of this board's archive is a powerful asset.
This site is far from dead, in fact it's fairly active as far as textboards go, with a handful of posts per day on average. If you're used to the speed of places like 4chan it feels slow, but that's just how textboards are. If you want more activity then put your money where your mouth is and start posting, but keep in mind what >>15 said. Threads like this are a great way to kill a site for real.
>>19,21
I never understood the hate-boner people have for necroposting on western forums, and I'm glad textboards usually aren't like that. I bumped a thread from the bottom a while ago and it ended up being one of the most interesting things on the site.