It was only a matter of time before anti-spam software providers saw the value in real-time blackhole lists. So without further ado, Trend Micro has bought Kelkea (formerly MAPS). Trend Micro will likely be providing add-on anti-spam services, under its own name, sometime later in the year.
And now a few are popping up with more horror stories regarding the use of blacklists. Catch the Slashdot crowd discuss Paul Graham’s recent commentary on the dangers of spam blacklists.