You know all those movies, shows, and news features that make it seem like net-savvy freelancers work every day from their favorite coffee shop? They never show them struggling with just what's fair trade for the seat, the temperature control, and, of course, the free Wi-Fi. The Freakonomics blog notes that cafes lose money by charging or restricting laptop use, but should one small cup of Joe entitle one to a whole day of data? Are regular re-ups a nice compromise, or is taking up a seat for hours on end just plain rude? Since our readers are pretty savvy with the laptop dilemma, let's hear how you handle the subtle obligations of working, or just browsing, from spots that offer theoretically free Wi-Fi in the comments. Photo by scottfeldstein.