does anyone know other shopping networks to submit products to?
some of the few i know ofGoogle Merchant - FreeYahoo! Shopping - PPCShopzilla - PPCAmazon - Commission + RefeBay - Commission + Ref
There are many of them:shopping.comgetprice.comshopmania.com
If you need a suggestion, I would suggest to focus on Amazon (or eBay) because it can give you many customers.
The Ukrainian company magneticone has been offering a good sortiment of feeds, for several carts. Their code isn't open source though.
Here is a link http://tinyurl.com/yaov9bf