Nudge, I found it.

FYI for those interested, this is a very good read.

http://balsamiq.com/blog/2008/08/05/startup-marketing-advice...

In my case I submitted my simple online timer to Lifehacker Australia, on a hunch that it would feed through to the US site. It worked, but I wouldn't know if it would work again, and I don't know if they write about iphone apps.

I didn't submit it to unaffiliated smaller blogs simply because it wasn't really a business and after the lifehacker article I was happy enough.

You should read the blog of the Balsamiq mockup software creator. He has a great post - I forget where, I'm afraid - about exactly how and what he wrote to bloggers when he was launching.