Thanks for asking. It's usually web apps built around some kind of networking needs. I built one where people could ask for recommendations from friends. Another one was a hybrid app where users can set a single status for themselves. Now I am working on an amazon reseller site that has curated products. I built another one where users can post their SaaS apps (kind of app store for web products). It usually dies within a few weeks because I am lost on how to promote/market these apps. And this goes on a loop. So I was looking for people with a proper business case. While I learn a lot building these apps, I figured it will be more useful if I can build it with some purpose.