wilderness - as I said, this was an example for the OP. My code is more restrictive but I'll let the OP tweak the IP ranges to suit his/her needs. Not all sites are the same ya know :)
MSN's 131.10* used to be used for legit purposes, although it fallen into the stealth hit and run category nowadays, I have still allowed the range because I block the nefarious requests by other means. But you may be right, it probably should be omitted.
And FYI Europe represents 30% of my sales and Yandex sends triple digit daily traffic my way.