From recent times, being able to comment in some blogs is not a matter ot knowing what to write or just what to say. It's a matter of super abilities.
First, I have to say I've got normal vision skills. I'm able to read everything a normal person could read, and sometimes I even would consider I can read tiny things.
But regarding ultra tiny and blurry texts, I'm a not capable man. :-(
After writing a small comment and pressing the authentication button, I correctly enter my credentials, but then I get a puzzle to go on.
I know that spam is a real problem, but these cryptic Captchas, for sure, are lowering participation in blogs