I'm a full stack web developer and I created https://www.quirkycushion.com https://www.quirkycushion.com last week. If it gains any traction then I plan on sett

I'm a full stack web developer and I created https://www.quirkycushion.com https://www.quirkycushion.com last week. If it gains any traction then I plan on setting up sister sites for other products. I read the book http://www.startupbook.net/ http://www.startupbook.net/ which says to pick a niche which is why I will have several sites each focusing on one product rather than one site with multiple categories.