I've made an interesting personal observation with regards to blogging and visiting other blogs. I have my regular 10 - 12 sites that I like to visit, and as I've mentioned in an earlier post, I visit more them than once or twice a day. (as you'll notice in your site meters, if you care about that sort of thing.) Primarily I'm checking if there are new posts and/or comments being added to the last post.
It seems to me that those other fellow bloggers whom I like to visit have already been onto the current post I'm viewing, have already commented, and if I come back later in the day to re-visit, it's apparent they have, too, as they have left more than one comment.
It's like I belong to a benevolent society/landsmanschaft -- I might not get to all the meetings, but when I do get to one, it's already taken place! The members have come and gone, and all that's left for me to do is read the minutes of the meeting I missed!