One of my XBMC posts is continually being hit by someone posting identical spam messages: the text of the post consists entirely of
<a></a>
i.e. a blank anchor. Akismet doesn’t detect this and WordPress’ blank post filter obviously doesn’t hit it, so for a time these posts were getting through to actual comments page. This is basically designed to have their name hyperlink to one of a series of semi-randomly named .biz domains which, incredibly, don’t have DNS right now. Each message is being posted by a different IP from various consumer DSL IPs around the world, so almost certainly a botnet; I am getting an identical post once every two-three hours. I’ve heard that this is how a lot of scumware purveyors work right now – send out the spam, appears blank to start with, and then have the domains pointing at various botnet servers triggering the conversion of more machines into botnet servers.
I have added this blank anchor tag into my moderation list, but can’t bring myself to put it into the automatic blackhole list (because it is a genuine mistake people can make), so it’s merely downgraded from visible to you to just an annoyance for me. I would recommend other wordpress.com bloggers do the same until Akismet fix it.
F L I C K E R I N G / F R A M E 