Also sometime, it may has happened to you that you expresses an idea you have, nobody first pays attention, but after sometime, you observe that someone has stolen that and takes the most advantage of. But, what about if your ideas could be sold? Why not?
ember 15, in his famous Web log, sethgodin.com has published a post on Selling ideas to a big company. He writes:
Two things have to happen before a big company buys your idea:
1. They have to be in the business of buying ideas.
A company that likes buying ideas has a process. They make it relatively straightforward and they have no upside in stealing from you. A company that isn't in that business puts up barriers. They troll around trade shows looking for ideas to take (and there's nothing legally or morally wrong with that, imho).
2. They have to trust you
The reason that big companies don't want to hear from you is that they don't trust you. They don't trust you to understand their industry, or to understand implementation. They don't trust your judgment about whether it's a good idea. They don't trust you won't flake out, or sue them, or sell your ideas to multiple parties.
I strongly recommend you having a look at this article.