JUST a word of warning to those using TypePad to run their blogs, it would appear sites are being targeted by spam - I've received two or three on most of my blogs over the past couple of days.
I must say that this is the first time I've had problems with automated spam for a long while, just make sure you delete them as spam from within your admin page.
I have looked around the web to see if there is anything official but only found other sites saying they have received spam, hopefully TypePad will update the Six Apart Status page soon with details.