4 Years
Without running any AV program. The only thing I run is Chromes built-in popup blocker.
Yes, it is possible. No, it's not for most. I have very "clean" habits when online. No, not what I look at, but how I look!
I would never recommend this to the average user or on any kind of commercial/business network. I've done it, in the knowledge that I may get hit, as something of a test. So far, so good.
Regards