Do you keep a list of the books you’ve read? How? In a journal? Through one of the online services? If so, WHY? To keep good records for future reference? To make sure you don’t accidentally reread? If not, why not? Too eager to move on to the next book? Too lazy? Never thought to bother?
In the past I never kept a list in the past because I usually remember exactly which books I've read and which I haven't by looking at the cover or remembering the title/author. They were always in pieces though, unless it was recent or some other reason. I came across Goodreads in September this year and now keep a list on Goodreads so I wouldn't accidentally reread, even though I don't mind rereading a good book. I personally think I reread so I can catch the details that went flying over my head the first time. But even with my mental list, I always played a Whack-A-Mole style of a game where I had to figure out which books I've read by that author (in the past, it was Ann M. Martin and others). With Goodreads, it just made my life easier, minus those Internet Connection Wars. ^_^