Here's a better one : do you close threads that have been started zilion times ? The answer is yes, of course we do !
Sorry if it sounds harsh, but please, think that some people have been here for two years now. There is a "search" option that you can you use to see if something similar has already been posted. If yes, no need to recreate a thread. No need to revive 1 year old threads aswell.
Lego is about making modifications by the way, so I hardly think you will find anyone here that didn't build something new or modified a set. Just check the MOC forum for a lot of examples.