A strategy I've heard that is being used a lot is to make the most of your eBay user profile. Stuff your profile with links to your site, and at the beginning of every auction's description, have a link to your profile. It's sort of an indirect way of getting traffic to your site (and is completely compliant with eBay's ToS), but it definitely works.
In all honesty, I think there are a lot of other ways to spend your time to increase traffic flow. However, If you're selling a ton of products in ebay, then use your profile as mentioned.
I'm facing the same problem as alexei. I own a site dealing with ebay jewelry and I don't know how to drive traffic to it from ebay users. A few days before I thought emailing ebay blogers to post a review about my site might be a good idea, but no one replied