first off... HorneyMatches is the king of links! They have done an unbelievable job building there links! Congrats.
I'm almost positive that that is from a program called LinkAssistant / RankTracker. I recognize that email from the demo.
http://www.link-assistant.com/linkassistant/
It it has a bot that targets sites that rank for keywords that you want to rank for.
I use Rank Tracker, but didn't have the balls to use Link Assistant... But I've been watching HM for quite some time and now.... hmmm.
Sorry, you might soon be getting spam from me. (just joking)
;)