Originally Posted by ryanf58
Just go to the thread that shows the item you purchased or sold, go to the address bar on the top of the page, right-click, hit copy, and paste into the box that asks for the url under the feedback page.
Click in the address bar
If it doesn't highlight the entire URL, hit Ctrl-A to select all, then Ctrl-C to copy, then click in the feedback URL box and Ctrl-V to paste.
Windows hot keys 101