It's not the SPOILER BLOG but it's a nice Blog
I found this blog a few months ago.
This guy has kept this blog about t-shirt for years now, he posts about many new t-shirt printed by several companies.
It also keeps you posted on challenges taking place on the many t-shirt sites and thier different ways to pay for prints.
Check it out.
You can also check out the archieve pages for a description (it can be a good or a bad review) of your old prints.