Reseller and/or affiliate networks come to mind - let them do the selling for you, for a commission. This would be easier to accomplish with traditional deskto

Reseller and/or affiliate networks come to mind - let them do the selling for you, for a commission. This would be easier to accomplish with traditional desktop-type software than a packaged web-app - but I would argue that it's not impossible. You might consider resellers that are willing to work with a pay-per-lead, which likely would work in your favor (protecting your web-app source) more so than a pay-per-sale model. That way, the resellers send interested parties (leads) your way, but you close the deal - and no one gets your product without your say-so. The normal "protect-your-source" issues arise, but those are out of the confines of this discussion, I think.