It's really not that bad. You can turn off signatures in your settings. And if there were no idiots, no one would have time to talk on the forum.
Agree with this.
For OP:
Forum is suppose to be compose of people talking about something. Like here it is primary bitcoin and more. If no one will post here it will just become one of those forum that dies after what? A year or two or maybe less.
Just think about this. Why is it that other forum sites are paying up here just to post some comments in their own forum websites? Without people it will be nothing.
Even wikipedia needs people to edit or update their own websites. But let us not make this forum become just another wikipedia for bitcoin where we would just get information and no more talking.