NOTHING? Tell that to all the people with skills, assets, time, connections and tenacity but a poor idea.

To say idea's are worth nothing is asinine.

the cost of coming up with a good idea (or what you think is one) is very cheap/near nothing (not to mention it will change as time goes on). the cost of good skills, assets, team members, connections, and so on is much higher in terms of both time and resources

Correct, but cost == value? I'm not sure.

I saw these guys speak at BarCamp Cork today and although they preach from much the same book as 37Signals, they do so with even more passion and enthusiasm, and a healthy dose of wit to go with it.

You need both! You need ideas so as to use the connections, efforts, etc.