Bots... Some landowners use them as trick to increase artificially the number of visitors, or to make think residents that is a cool place to hang.
They cause wrong statistics of people online, they use resources of the grid lowering performance and lagging.
I understand some people use bots in a constructive way, as greeters, or in other ways, but when you see more than 20 bots together, in a box hidden in the sky the only use they are having is to manipulate statistics.
For: http://raulcrimson.wordpress.com/2009/01/03/bots-grrrr/
