1. Automatically Follow Back. http://autofollowback.com.
2. Calculate Twitter Reputation. http://www.thekirankumar.com/blog/tag/calculate-twitter-reputation/.
3. Capture HPC. https://projects.honeynet.org/capture-hpc.
4. Google Safe Browsing API. http://code.google.com/apis/safebrowsing/.
5. KOOBFACE: Inside a Crimeware Network. http://www.infowar-monitor.net/reports/iwm-koobface.pdf.