Some low-IQ Asian bot hit my site today. Bogus referral, unproperly formatted useragent. But the worst thing is, it converts all urls to lowercase. Then it gets stuck in a loop, because it will get a 301 from my server with the properly capitalized url, which it promptly reconverts and re-requests. Hundreds of requests littering my logs, in a few different bot sessions. Bleh!
This just may be my first venture into excluding IPs - never felt the need before.
Rob