Google no longer allows feeds from independent ebay stores - So this guide does not apply to ebay store sellers.
This is the best thing I've come across yet for ebay store owners, and the absolute best part is - It's totally free. Google has built a free tool to let you upload all of your auctions into it, so that hundreds of millions of customers worldwide can find your auctions. And buy them.
Getting started is a breeze. Just go to Google, and search for the Google Base Store Connector. Run the download, and follow the directions.
The whole process is pretty quick. It took me about an hour from download to uploading all of my auctions to Google. Most ebay store owners should find it much quicker than that - the upload time depends upon how many items are in your store.
Sending items to Google is actually a two part process. First you upload all of your listing to them, and then you have to publish them to Google. They guide you through each process.
After you've got everything uploaded - Go to Froogle, Google's shopping link, and start typing in some of your auction titles. I did, and it was amazing. Of the ten items I searched for, I came up in the top ten hits everytime, and as the number one hit nearly half the time.
One drawback I will share with you though is: Adding your items with the Google Base Store Connector is not a one time thing. You should probably update it at least once a week, or more often if you list a lot of items. When you are done running the Store Connector it will give you some advice on this.
Hope to see you all soon on Froogle and Google.