I am thinking replying should be disabled. I mean look at what happened with all the bot replies in the l2stories server, plus the replies tend to turn into flame wars or worse turn into who has the longest... hmmgrrr who is the best in html and xml editing.
Another suggestions is to add bellow the stickies the 5 newest servers for 7 days. This way it may motivate more people to buy stickies after their 7 days are over.