Gallery as an API

I'm gathering feedback for new project. I was so disapponted by current state of APIs for accessing Dropbox, Flickr and others that I decided to roll an aggregator.

You can't expose Dropbox/Flickr gallery on your static website, as you'd have to expose your private API key.

UPSTA would do that for you and just provide publicly consumable endpoint.

Would you consider paying for this service ?