Layered Technologies

I have just been combing through the logs because I have been getting hit quite hard recently and was wondering who by and I noticed the strangest thing.
I noticed the following IP address was cropping up under different referrers.
I also found the following blog entry about Layered Tech supporting referrer spam
So far I have noticed them masquerading as the following referrers.

Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; FunWebProducts-MyTotalSearch; SV1)" 1
Mozilla/5.0 (compatible; Googlebot/2.1; +" 0
Mozilla/5.0 (compatible; Yahoo! Slurp;" 0
Mozilla/2.0 (compatible; Ask Jeeves/Teoma; +" 0
Mozilla/5.0 (compatible; BecomeBot/2.3; MSIE 6.0 compatible; +" 0
aipbot/1.0 (aipbot;;" 0