Agreed! After years of exploring new ideas, I recommend sharing your idea with anyone who'll listen & solicit their feedback. Ultimately, very few (nobody?) people will be as excited or passionate about a new idea as you are.
Once you have a product and are in the evolution phase, well - then ideas should be protected. Those aren't so much ideas as innovation roadmaps.
"Don't worry about people stealing your ideas. If your ideas are any good, you'll have to ram them down people's throats.” - Howard Aiken
"if everyone loves your idea, I might be worried that it’s not forward thinking enough." - Chris Dixon