Not today they won't: Saturdays are always very quiet, and Sundays as well. The evening will pick up a bit, but I shouldn't think they'll have much fun today.
I have posted on the open section without logging in before, just came up as 'anonymous' but it appears you can now do so with a username, must be some sort of glitch.
the thing you have to remember about trolls is that if you don't reply to any of their stupid posts then they will get bored and hopefully go away. Bad spelling and topics like "URGENT , My horse has turned into a unicorn, what do I do?" can be a bit of a giveaway!