Bob Cringely, well-known computer industry guy wrote a nice article about the "Five percent solution". He uses Talkinator as prime example!
I like this idea - I remember many years ago someone telling me about Google and I thought they were nuts - "I have Altavista - why do I need this Google thing? (silly name by the way)". Or even a bigger one for me was when I first heard of YouTube - so some little guy is going against an already established Google Video with their only real distinguishing feature is that they only allow "short videos"?
Bob's right - sometimes a very established idea simply needs a 5% twist to take it to the next level.
Thanks Bob !