This was recently discussed in the CB and Mr. Muskrat added some suggested edits to How do I change/delete my post? that should hopefully provide more helpful guidance to those who actually take time to RTFM ;-)

Also, word of caution to those who strip content out of their node in some Orweillian attempt to change the past.....this is an excellent way to get additional downvotes....if you feel your post was boneheaded (we've all been there) just strike-through what you posted and add a statement of retraction at the end.