…many successful consumer Internet services have three things in common that allows them to scale, get investor attention and, more importantly, bring in the much-needed revenues (and eventually profits).
Those things are:
They have a clear purpose.
They are simple to use.
They are fun to use or facilitate some type of entertainment or both
Now I don’t mean to suggest that you must have all three to be successful — but if you do, your chances of finding fame and fortune are much higher.