Bot Blocking Links
Quick primer on identifying bot activity is a article which I wrote describing methods to block content scrapers and similar bots.

IncrediBILL read his rants and info dumps on bots and scrapers, at the very least they will be entertaining.

WMW: Search Engine Spider Identification Forum is a good place to ask questions on possible new bots/spiders/crawlers/indexers and related discussions.

Bots vs Browsers Blog and general public database of Bots & Browsers.

user-agents.org a public search able database of User-Agent Strings, and information about those User-Agents.

Johann Burkard blog which he often covers bots and related topics.

!Dam Spam is a blog which covers mostly different spamming methods email and web based.