About a decade ago, when facebook(after IPOing at 38) came down to 20, I was in a bus speaking with a friend about buying a bit and holding it forever(like Buffet). He laughed at me. A lot of folks in the bus gave me strange looks.

So far it has been the best decision(investment wise) for me.

The only effort I did was to read their IPO prospectus and the latest 10q(at that time).