As an automated ebay listing and website storefront system channeladvisor is pretty hot.
Channeladvisor has made my life easier today because:
1. You can get a full export of all of your inventory – all that hard work exported in excel.
2. You can export all customer information (and see if they have opted in to your newsletter or not) for email marketing campaigns.
3. PayPal payments pro and express integration done for you. I still can’t do the paypal payments pro integration on my own website, but I will! Roll on Cubecart 4
4. Automatic feeds to Google Base and Shopzilla
5. Integration with Google Analytics using the e-commerce functionality too (so you can see what leads actually generate complete sales)
6. Export of all sales, all in one go.
That is why I love ChannelAdvisor today.