When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
oh yes, once you are done with the download, select DELETE from the menu and delete them. =)
The other trick is to delete your sent items.
If you send a lot of PM's, the Sent Messages will fill up the inbox really quick.
At the top of the inbox, select sent items from the drop down, and go in there and delete all, unless there are ones you want to save that you have sent, then download them and delete them.
that will give you plenty.