Ebay says no external websites, however they never said no business logos, (using business name as ebay username), banners, etc. For example your website is
www.ebay.com. Yeah you can't put
www.ebay.com in the text because it will link it. However, you could write ebay.com in the text (description). Also, make banners that say ebay.com will also make people know where it came from and that you have a website. There are many different ways to advertise on ebay EASILY.
- Devin