Things marked HTTP will post but things marked HTTPS won't.
Edit...
URL=https://pimpandhost.com/image/42197952][IMG]//ist3-2.filesor.com/pimpandhost.com/6/0/8/0/60807/2/R/3/C/2R3C8/soccer_peekaboo.gif[/IMG][/URL
Ok if you put the https after [IMG] so HTTPS: (Colon) //ist3-2.filesor.com etc...