took me awhile to finish it, almost forgot to enter. here is my list, try to give it a more homey, human feeling
25: Good job, there are fortunes awaits you.
50: Very nice, keep it up
100: You are cool
250: We love you
500: Awesome, you are just unstoppable.
1000: It's a milestone.
2500: You are Da Man
5000: You are an alien!
7500: You are superman!
10000: Let's bow to the posting God!