yeah, but follows in random walks.
You see, nodeA follows 100 others. If each of these follows, follow him back and other 99 nodes
then the probability of doing nodeA --> follow --> nodeA is 1/100
Discussion
Are you saying (or assuming) that when you encounter an army of N bots, then the bot army tends to be more tightly integrated than an organic group of normal users, bc the bot army strategy is for every bot to follow every other bot? Could a more sophisticated bot army then decide not to do this?