SSL posting is ridiculous. SSL purpose is to avoid traffic shaping not protect your ass from the RIAA, its not illegal to download right now anyway. People who use ssl for downloading and are not traffic shaped or on a public network is wasting your providers resources and also sometimes lowering your thread download speed due to the handshakes that are necessary with SSL encrypted connections.
Why I say ssl is pointless for posting is because either way your post will be tracked by your provider by a unique ID tag this tag is then tracked to your account for banning purposes (say if your were spamming or posting child porn). The riaa CANT and will not sit there and use resources to sniff your connection, its actually illegal at least here in the US.