I heard about you through my work, but since I do this stuff (hunting spammers) for my own pleasure as well as for my paycheck, I figured I’d say hello off the clock.

Two things to mention:

First, I syndicated your RSS feed through LiveJournal.com. Hope you don’t mind. I tend to get most of my news through there. The URL if anyone wants to keep an eye on it is http://www.livejournal.com/users/spamhuntress/

Second, and more on topic here, one tool I love that wasn’t listed is http://www.dnsstuff.com/
– Just about any DNS type of search you can think of in one web interface.

Keep up the good work and I hope to stay in touch!