I think an extension of this is: how do we convert free to paid...? My thoughts were for my own SaaS application was to: - offer free account to "get a listin

I think an extension of this is: how do we convert free to paid...? My thoughts were for my own SaaS application was to: - offer free account to "get a listing" - upgrading to a paid account gives ridiculous service/benefit - a commission is paid to the person two converts that free to paid member I haven't launched yet, but looking at a 33% conversion ratio of free to paid. But this seems pretty basic and lame. Anyone else have suggestions?