I've been reading posts on sub pmt options. Is Paypal the only payment processor being used? We currently have a store hosted on yahoo as well and would it would be great to keep all $$ flowing down the same path.

Has anyone out there integrated with other third party processing from UBB?

I don't think this has been looked into yet, there are a couple my clients would like to see as well - 2checkout among others.

would be nice to have a poll or the like that gave an indicator of what would be the most popular after, of course, paypal..

We use Yahoo! Store for everything else in our company. No complaints with PayPal, just would be nice to be able to have all the dollars flowing through the same place.

Some (popular) various options:
Yahoo Storefronts
2Checkout
Google Shops