[aa-jv]

I heard these same arguments about the Linux kernel, back in the days before it came along and ate everyones' lunch.

This app can be built, quite easily, by anyone motivated to do so. Just like the kernel, just like a distribution vendor, just like any one of the thousands of highly successful open source, community-oriented projects out there.

[nickthegreek]

Their algo is the best. Not even the big players have been able to copy.

[falcolas]

Hypothesis: it’s not being copied because it connects users to more users, instead of connecting users to brands.