My company offers this option, too, and I have used it in the past. I have used it before when I knew I had a trip to Asia coming up, for example, and it's not worth going for less than 2-3 weeks. I have a large family, and almost all of them are outside of driving range, so if I want to see them all, it can suck up a lot of vacation time. As my salary has gone up, I've used this option less, simply because it costs more to take the time off. Also, I need fewer days off now that I work from home more, and we already have pretty generous PTO time - almost 5 full weeks per year.