Niche is one of the main one. Most people have limited time and limited memory and wont use more than a dozen sites every day. Even though I use to bookmark tho

Niche is one of the main one. Most people have limited time and limited memory and wont use more than a dozen sites every day. Even though I use to bookmark thousands of websites, when Im bored I dont find it easy to remember more than 5 sites that I'm interested in.