- Check how and what Path.com was - to begin with you can just copy it

- Then check why it failed - can you avoid that? Or will money will not be a concern?

- To offset cost, see if you can do things like letting users share links of media, rather than you hosting it. Etc.

- Do not offer it for free (not beyond beta/alpha). That’s a sure shot way to become what you are trying not to become. And think about the geography/country before setting the price — purchasing powers are different that way. Or if not then target an income/social bracket, who will pay for it, and stick to it.

- Also, accept that — it will be a niche product - from the beginning. The masses don’t want they don’t already have and even if they’d want something else - it will be some Frankenstein or the other.

tl;dr: Making something “nice” will not be your problem. It will be how to stay financially afloat as it WILL NOT be a mass thing.