I think you can read blogs on any eReader by using this: there are online services where you can subscribe to blogs and that will convert their content to PDFs and deliver them to you.
I've 5 inch BeBook, aka Hanlin: https://secure.wikimedia.org/wikipedia/en/wiki/Hanlin_eReader
It's cheap, I got it here in Europe a year ago for €199.
It has no touch screen.
Battery life is very long, usually more than one month.
Changing pages is slow (couple of seconds), but I don't mind, I use it for reading books and magazines integrally, not for browsing. Searching for text is cumbersome, as you've no alpha keyboard to type it, you've to select the letters as you type.
PDF text is reflowed so you can zoom in.
Before I had my iPad, I even read Scientific American on it, was no problem, except for the pictures and drawings, the reflow algo didn't handle that well.
Now I read pure text on it, and text + pictures/diagrams on my iPad.
Edited by Didier Stevens, 07 February 2011 - 04:38 PM.