Question for PG/HN:  Where do you think we stand on your list of "ideas"?
We built something alot like: 22. A web-based Excel/database hybrid.<p>The question is though, what problem does it solve?  It was very hard to explain to people why they would need it or care about it.<p>Spent a year developing it and spent alot of money on it.  For nothing in the end.  A very cool technology and I still like it alot.<p>Lesson: build something people want, or that solves a real problem.  Don't build a solution looking for a problem.