I ended up here because I heard Bill Curtis on American Justice (Dahmer: Mystery of a Serial Killer) mention 'pleaded guilty'. It obviously sounded very wrong and I just had to make sure I wasn't missing something. The way I see it is, when you begged someone to go back to school, for example, you pleaded with them. When you entered a guilty plea, you pled guilty. (Wow. Spell check just told me 'pled' does not exist. Amazing).