Nope, I've never marked or commemorated a post milestone in any way and I don't think I will ever. I don't even like having this many posts I miss having 3,000.
Yep! I've seen a lot of people do giveaways when they reach a certain amount of posts. I personally did a 20K TBT giveaway when I reached 100K in forum bells.
ive got 1k posts in over a year, idc about my post count and most of the ppl with a high amount of posts don't even spend that much time on tbt they just spam the basement whenever they are online but im p sure I did a giveaway for when I hit 1k