Often the best way to post links to eBay, You Tube, photos etc is by highlighting/copying the writing in the address bar at the top of your page, then pasting it in the RUM Forum reply box.
On a Mac I click three times in the address bar until all the writing is highlighted, then apple and c to copy, then apple and v to paste it in the box.
On a pc I think you might have to highlight, then click on edit > copy, then edit>paste
Hope that makes sense, my girlfriend showed me how to do all this sort of thing.
