Here is a small free application called FTP Snapshop. It does the following: Runs in the system tray waiting for your used defined hot key. When the hot key is pressed, it automatically takes a snap shot of whatever window you are in, compresses it into a jpg, gives it a unique name based on the MD5 checksum, uploads it to a user specified ftp site, and copies the url to the clipboard.

Let me know if you find it useful.

Click here to read more about Snapshop