Actually, I was looking for a list of other YC companies to find some that do impress me and Bump, specifically, was one I was planning on mentioning.

Be the man in the arena, don't be one of the ignorant throng who criticizes the courageous ones.

http://en.wikipedia.org/wiki/The_Man_in_the_Arena

Sure, Bump impresses you now, but you would've had the same dismissive comments about them on their demo day.

Revisit this list in a year or so and I'm sure you'll have some different opinions and wish you hadn't been so short-sighted.

Seriously, you are assuming you know what is in my head and accusing me of being short-sighted -- talking without knowing what I'm talking about... I mean... You do see the absurdity of that don't you?

And for the record, I've built electronic circuits with push buttons and had to accommodate the bounce of the button on the switch, so I do know just a little bit about the difficultly. Compound that with countless phones bumping into each other, perhaps at the same time and the problem is hard.

That's why I am impressed by Bump. It has nothing to do with their potential success then or their current success now. It's an innovative and simple idea. It makes you think, "Wow, why didn't I think of that."

In 2 or three sentences about Bump, it's obvious how difficult the problem is and that someone solved it is impressive.