We have the potential to solve the biggest problems of today

There's a lot that I dislike about this article, but I'll start with this: it is probably self-refuting. Someone could just have easily written: "I find it difficult to see individuals who could focus their time and effort solving [problems like energy, food, water, health, education], instead put their efforts into something like a takedown of the moral priorities of the people behind Yo on a their personal blog." A person could argue that the post has more value than Yo (though I'm not sure this is self-evident), but it still isn't in the same ballpark as "energy, food, water, health, education." I mean, c'mon Christoph McCann, get your priorities straight!

Of course, I don't actually make that argument, because I reject its premise. As the above argument hopefully illustrates, it is not reasonable to insist that everyone spend all their time in the most socially beneficial way possible. Should we all strive to make the world a better place? Of course. But I don't know many people who think that we need to spend all our time tackling the world's biggest problems.

And, by the way, who appointed Christoph McCann arbiter of what it good and valuable in this world? Maybe an app like Yo will bring us together in a new (albeit marginal) way. That's valuable, even if it is also silly. (See, e.g., the first few paragraphs of this article: http://www.forbes.com/sites/quickerbettertech/2014/06/23/goo...) Or maybe it provide a cautionary tale to remind us (as, perhaps, it already has) what is really important. Value exists in subtle forms that are not so easy to glibly list, and can be advanced in subtle and unexpected ways. While I wish we lived in a world where more people focused on problems like energy, food, water, health, education, I'm not sure I want to live in a world where EVERYONE works on those problems. I want people to be free to do the unexpected, even if the results sometimes seem frivolous.

So, if McCann's only point is that we should take a moment and reconsider our priorities, point taken. But this looks suspiciously like something a bit more (with respect, and apologies) totalitarian.

Or Arbel, cofounder and CEO of Yo, told Mashable that the app has had 110,000 downloads since Wednesday morning and 160,000 total downloads since it launched quietly in April.

"Us"? There is no "Us".

There are people that care about the things that you care about, and there are people who make apps like Yo. The latter aren't listening, the former have already heard the message.

To me, there's three categories startups fall into: fun, world-changing, and failures.

SnapChat and Facebook are fun. Google and Tesla are world changing. The failures may be nameless, but they outnumber the rest 5 to 1.

If you're a success story, it doesn't matter to me whether or not you are fun or world-changing. You succeeded. That's enough in itself.