I have reported this to Failblog, last time today but also earlier with no response. I have a ticket number from them.
Important to notice before someone mentions I should use an ad blocker: I am strictly against ad blocking. Informative advertising which does not steal focus or make the browsing experience annoying is welcome to my browser and display. I know a lot of people who get their living from advertising on their blogs and sites and want to support that kind of honest income. Advertising can and should be undisturbing, follow accepted moral and ethic codes.
Take our own Seven Forums as an example: John can offer us over quarter million members an ad free superior place to hang out, thanks for the guest users who will receive some ads. Sounds weird but we members can thank Internet advertising for letting us to enjoy Seven Forums. As a guest user you can still browse the forums, the ads a guest sees are not steling the focus nor are they trying to force you to install malware.
Failblog as told in my original post's example from today is just one more of these sites who completely forget the consumer in their hunt for revenues. Some advertisers they have are known malware distributors.