Well, Big Daddy J obviously is the driving force of the Baseball Card Blogroll, which that in itself makes his blog famous. While he tends to be more towards sports focus, he applies that focus to cards. For example, his blogs about guessing who is going to be pick to Topps All-Rookie team are thought provoking. He used to have the random Topps card of the day (an awesome feature) but BJD seems to be posting a little less recently. Has been around since May of 2008.