- Yahoo! Slurp too Stupid to be a Robot
- Yahoo! Slurp in My Blackhole (Yet Again)
- Suspicious Behavior from Yahoo! Slurp Crawler
- Yahoo! Lies about Obeying Robots.txt Directives
- Yahoo! Once Again Caught Disobeying Robots.txt Rules
- Yahoo Incongruities.
- Yahoo! in my Blackhole
- Protect Your Site with a Blackhole for Bad Bots
- Analyzing Weird 404 Search Engine Requests
- List of All User Agents for Top Search Engines
- 2010 IP Blacklist
- Stop 404s for Mobile Versions of Your Site
- Pimp Your 404: Presentation and Functionality
- 4G Series: The Ultimate User-Agent Blacklist, Featuring Over 1200 Bad Bots
- Evil Incarnate, but Easily Blocked
- Unexplained Crawl Behavior Involving Tagged Query Strings
- Over 150 of the Worst Spammers, Scrapers and Crackers from 2007
- Blacklist Candidate Number 2008-02-10
- Blacklist Candidate Number 2008-01-02
- How to Verify the Four Major Search Engines
- Eliminate 404 Errors for PHP Functions
- Invite Only: Traffic Control via Whitelist