Ive seen 2 kinds of mining bots, the one that teleports from node to node, and the lvl 21+ just outside of Ul'dah mining the lvl 5 nodes with naught on but a lvl 9 jacket. Both are FC'less. I have yet to see any bots killing spawns.
And then there are the names Asdfgrew Asdfgrew, its like they cannot use the random name gen.
The few spam bots with normal names appear to be hacked accounts. I have yet to see any of the harvest bots with normal names.