Amazing! It seems my previous post about how @ello can make sustainable cash got obliterated. In fact this is the third time I'm writing this. I know it got posted before because @scottbeale and @gregcohn and @yamablam commented. So here it is again (and again). I just think it could work.
Ride this viral sign up wave and get as many users as possible. The service is clearly viral, so keep it going. Keep improving the site, make it the best web experience you can, while staying true to your ideals. But get users!
Build great iOS and Android apps and charge $.99 for them all in the name of keeping this thing real and ad free.
Create in app purchases for unique features and utility. There's lots of possibilities here.
So @ello carefully consider your mobile strategy. There is money there.
I'd pay for an ello app, would you?