I just found out today. When I switch from visual to html to insert some code save and go back to visual it cuts up the inserted code. If you have inserted code you cannot go back and forth between visual and html. Serious pain! Does anyone know if anything is being done about this?
I have the same question. If I link to another post on my blog the current post shows up as a comment. Also from my wordpress.com blog. I have been deleting the comments so far. Blog has been up a couple of weeks.