Because I open up lots of threads into tabs, then go through them one by one reading off the posts and having long since forgotten the subject...
wow, I thought I was the only one that does that. I skim through the board opening threads into a new tab that I think might be interesting by the tag line (subject), then go through and do the eye work on reading each of them after I have closed the main board. After all that, I make a quick trip to the gallery to see if anything new is in there, then close out of blitz forums for the rest of the day.....