I spend some of them online here on this forum and other digital goods forums, Suprisingly a large number of merchants "peer-to-peer deals" are starting to take BTC and some even only take it "even on other forms" probably because it's reversible, I also hold and wait for a price increase.
You right a large amount of people like to do deal with bitcoin payment and not only peer to peer but third parties and companies also like to adopt bitcoin for their companies as they know most of the people who are on digital world are using bitcoin for their payment.
That is right. It is better to use the bitcoin to buy things from stores. That will increase the circulation of the coin.