[spdy]

Does it matter if someone copies your idea even if you have worked with him in the past ?

Look in the broader landscape there are so many ideas who are the same at their core. But only the user makes the decision who will be successful and who is not, try to deliver the best experience.

I got over this "we have to find some unique idea to start a business and we wont if someone is already in it".

Whip it off and go out and build a better product/service than your ex-co-founder their is enough room in every market.

[ghosttown]

Alas they have more resources than myself, so will most likely end up with a better experience than me. But you are right.