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?
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.
How does that choice effect archive? "This is different, remember they said... ...but I can't find it."