Make sure your listing follows these guidelines. If it doesn't, it may be removed, and you may be subject to a range of other actions, including limits of your buying and selling privileges and suspension of your account.
What are the guidelines
Changes registry entries or otherwise writes to another person's computer hard drive.
Creates automatic pop-ups except for links that open in a new window when clicked on.
Is used to drop or read a cookie on any eBay page.
Loads any binary program on another person's computer automatically, except for Flash content.
Launches a song or video when a listing is opened.
Overwrites any area in the listing outside of the item description area.
Manipulates areas outside the listing description, including changing fonts, colors, and backgrounds in areas such as eBay headers and footers.
Posts to scripts on eBay automatically.
Redirects the user from eBay to another web page, such as using the "replace" script.
Why does eBay have this policy?