Hm, it looks like he shut down his blog (and moved to twitter) because of inactivity. "Becoming an Advertiser" must either have been not that profitable and he's spending all his time saving his business, or it's wildly profitable and he's spending all his time counting his money - and thus can't be bothered updating his blog.
I'm kinda leaning towards "no profit, saving his business", simply because he seemed like the sort of dude that would tell the world if he was killing it (otherwise why start a ppc blog?)
In a similar vein, I haven't seen much from NickyCakes in the last few months either..