it's a great idea. i always think about the website where we can buy or sell anything by bitcoin
In this day it is easy to star such services. Everybody has internet in his cell phone and they can buy anything in the world and can pay from their Blockchain bitcoin wallet. Now the world is really a global village and for bitcoin and other cryptos there are no borders between the buyer and seller. They can contact each other in seconds and can deal. Reliability is must.
It is great idea and by this way more and more people will use their coins. When I want to use cryptocurrency instead of paper or fiat currencies I will definitely buy some bitcoin and thus the market cap will increase and so will the price. People will also come to know the benefits of cryptocurrency and those who do not want to put their money in crypto, will forced to buy some coins.