I had 10 people create accounts for me on a astronomy forum. They go through some pretty serious rigor to make sure people don't create multiple accounts. Anyways, I used a VPN HPA which changed my IP every time I logged in. For a while, I was building up the accounts. I would post in different threads. One day I decided to post them all in the same thread... anyways, all of a sudden they all got banned. Anyone know why this is? Can forums track machine numbers? Did I just need to clear my cookies?