Reddit is definitely one of my main browsing vices. I've found that the only way for me to use it somewhat responsibly is to make use of multireddits. However, I can't seem to use it responsibly on my phone for some reason. I think it might just be the inherant nature of the form factor as I don't seem to have nearly as much trouble when I use Reddit on my PC, but having a Reddit app on my phone is a surefire way to kill my productivity.

I have always seen my PC more as tool to actually get work done and my smartphone primary as a communication and entertainment device. I think we can all agree that it is very difficult to get actual work done on a smartphone, so perhaps the form factor itself is what makes me more inclined to mindlessly browse.