This is really important. One of my friends worked in a startup, an online retail store similar to Amazon, and it came out before Amazon) but the marketing wasn

This is really important. One of my friends worked in a startup, an online retail store similar to Amazon, and it came out before Amazon) but the marketing wasn't there, so that service failed. Nobody knew about it, so it didn't make any profit. Great concept? Absolutely! Look at Amazon today.