I've been doing this full time for over 2 years now. I run two full fledged incs, have an office, the whole 9 yards.
Before that I used to work for a business intelligence company and I would work on this stuff on randomly during the day then work at night after work.
In regards to the volatility, setup a backup plan, invest, invest invest. If shit hits the fan you should have numerous sources of income setup via your investments. Also, don't put all your eggs in one basket on the net. Try to find numerous ways of generating revenue, the scale that shit up.
Before that I used to work for a business intelligence company and I would work on this stuff on randomly during the day then work at night after work.
In regards to the volatility, setup a backup plan, invest, invest invest. If shit hits the fan you should have numerous sources of income setup via your investments. Also, don't put all your eggs in one basket on the net. Try to find numerous ways of generating revenue, the scale that shit up.