David, Max is the man to ask but I must admit that if I had a choice, I woould prefer to be taken back to the updated thread than back to the main threads page.In addition to your point, I also like to see what I have written after it has posted (in case of errors that I have not spotted - particularly when using HTML) and also, although I can't see a way for Max getting round this one, I find it useful returning to a thread I have just posted to as the link then shows up as having been visited so I know I don't need to go back until it turns back to blue after a refresh.
Jon