http://www.doxpara.com/
(... and if your browser renders the first part of this as black on black too, just hit "Select all").
For those, like me, of the non-technical persuasion wondering about the recent background rumblings about "DNS vulnerability", mutterings of "cache poisoning" and other esoterica of worrisome complexion ... but with sufficient interest to look around a little.
[on edit] The link to that particular explanation is http://www.doxpara.com/?p=1185 (no longer at the top of the page entry). And the "black on black" issue is fixed