Why not just subscribe to the threads you post in, and make sure you DONT get email notifications [they'll drive you insane, i got over 82 in one day]

Then, ALL you have to do is go into your user CP and it'll have a list of the threads you've posted on, on the first page. That's easier than any other way of doing things. Infact, as far i know that's how most people do it.

Why go all through the members list and through your profile when it's not needed?