I was reading a list of the top 40 web apps in .net magazine. I'd heard of many and I couldn't really see how many of them would help me at all.

There was one that had an intriguing name, but I didn't really have high hopes for it. It was called Remember the Milk. It's an online To-Do list.

I've always thought an electronic To-Do list would be a good idea, but when I've tried them, they've never been as good as writing it down on paper.

This one has got it right. It's simple, but lets me keep track of multiple lists in a way that my many notebooks failed me.

It's so simple, yet elegant and it's left me thinking why didn't I think of this and do it first.

Then I realised that I did think of something similar, but my idea had lots more features, did lots more and was much more sophisticated and complicated.

That's why it remained an idea. If you come across a problem and can boil down a solution that will solve that problem in the simplest way, then you've got an idea that might just make it.