I'm finding I have problems reading some blog posts out there. Not due to content, but the format of the post itself, especially posts I have to scroll down to keep reading. I've figured out a formula for it:
Extended length posts + small font - paragraph breaks = hard to follow text.
I have a form of visual ADD -- I tend to skim long blocks of text unless the content holds me -- but small-font text on the computer seems ten times worse than print. The more I read, the more the letters actually seem to dance across the window. Yet if there are paragraph breaks, the text doesn't do the Hustle, so I'm pretty sure it's not me (I plan to ask the eye doc next month when I go for my routine checkup.)
As to font size, the smallest print I can read in comfort seems to be 9 pt. Anything smaller is a challenge. Some font types are even hard to read at 10-11 pt. because the shapes of the letters can be easily confused with each other (arial, mangal, and trebuchet are natural focus-killers, for example.)
I also find I almost never read other writer's blogged snippets or short stories when I'm online. If I'm intrigued, I will print them out and read them off paper, but I avoid reading fiction off the screen. I do the same thing with e-books. I've always kidded around about being on the computer enough with my own work, but actually I have no logical excuse as to why it bugs me. An unnatural fixation with fiction on paper, perhaps?
What are your focus challenges when you're out and about blog-hopping?