Quote Originally Posted by sperk
when you market a product you don't market it "out" or "in," you just market it. If you say "I'm going to market this in" people won't know what you're talking about so why name your firm or site with a phrase that will only make people scratch their heards or assume you don't speak English. Same with financial markets, there's no in or out involved.
Traders often utilize such phrases:

"go in market" = buy something, buy some shares of some company
"stay out of market" = not to trade anything, wait.

That's why the idea was to name a firm "Market In&Out", and have a domain name "marketinout.info"