Some of those perks I understand are useful and there to help the employees (such as the unlimited vacation, the catch is that typically you have to be able to

Some of those perks I understand are useful and there to help the employees (such as the unlimited vacation, the catch is that typically you have to be able to finish your work on time). Others, are just clever schemes to make employees stay at work longer and be ok with it. "Doesn't it come off as lack of focus if employees can do whatever they want?" I know I spend some time hashing something out that is unrelated to my job just because it crossed my mind and it is just too awesome not to work on at the moment. The 20% policy just says, "hey it's ok to do that and why don't you show it to us so we can make even more money off your previously non-work related thoughts".