It's very interesting to see what others think about this. I would assume if you're saying "I love these blogs" then include a list of blogs (and hyperlinks), you wouldn't need permission. But, if you were referring to a person's blog, and referencing something they posted, or encouraging others to go there and post or whatever, permission would be appropriate.
Reading a blog is like reading a book or a newspaper/magazine article.... You don't have to ask an author's permission to say: I really like to read these books. But, if you're referencing material in the book, or something specific from the article (you get the idea) you would ask.
my PunchPal Too
| my SU! Inventory File
| my Tickets Too
: shown on my website
my free downloadable calendar templates here