OT, but why in the world would you have your blog posts pop up in a little modal dialog in the middle of the screen and force readers to scroll more than they have to?
How does that choice effect archive? "This is different, remember they said... ...but I can't find it."
Absolute laziness by everyone involved. If you use modals, you're a bad designer.
It's annoying, but they divide their blog posts into big public-relation type articles at the top of the page, and minor/informational ones at the bottom.