How do you know they're bots, and not just new accounts?
There are legitimate uses for bots. For me, one is a greeter to anyone who lands on my estate, and I have a few others that run as NPCs. They all do their best to stay on my estate, but sometimes get lost during a rolling restart.
You could put the kabosh on bots by only letting accounts with Payment Info On File on your estate (an option). If that doesn't work...
In order to play the free games I host, I have a hard limit of being at least one year old
OR having payment info on file. It's not to stop bots from playing, but shitty people. I could easily make it into a scripted system for sale. It even lets people know how to add PIOF. But there's a dumb bug with SL so they would need to purchase some Lindens as well to get PIOF to show up on their account.
p.s. This thread should probably be merged with the
other thread.