I use it for focus when writing software. I'm a fairly heavy user, and it allows me to block out anything that would take me out of flow. I write scientific security software, often under deadline, and my typical day is an integrated coding, working out, and smoking bongs. I prefer indica, and tend to smoke about an 1 oz. per week - these days about $120. Each day I do a hard cardio, which seems to balance out the smoking and coding from (seriously) 6am till 10pm with a few 1 hour breaks to eat or do that cardio workout.