That is correct. I allow very few bots as most of the others do little toward site promotion. It also allows me to keep my last 13 hairs since I am not tempted to pull them out when things do not go well. :)
(and teoma is on a short list of things to get rid of...)
But that's just me!
Obviously one can whitelist what they like. The above is my list... and one of them is for an onsite search box that keeps the visitor on my site...