1)set up an affiliate deal with a service that turns the photos into real products and integrate with their API. Send them the photo, and then give them the option to buy a print / hat / sticker / skin / etc. 2) you can use display ads from other networks in your email news letter if you want to try that, but it's a pretty abstracted revenue stream 3) sponsorships are much better than ads on low traffic properties..…
I realised that dkokelley and you shared a common advice for me and that is to grow the users first. I totally agreed with that.
This is my first web app too. So I also I like to ask in your opinion and dkokelley how long would you give your pdt/service a chance to reach product market fit? Currently I have on 30 signups. What if after 3 months it stands at 300 users? Do you use number of users as a metric?
Thank you :D