I covered this on my main site (davidenglish.com), but it’s worth a mention here, as well.

If you travel frequently by air, you may be frustrated in finding an in-seat power port for your notebook computer. Some seats have them; some seats don’t. Most don’t, so I usually leave my DC-power adapter at home, since it weighs more than my regular adapter. Even so, I’ve been curious to know which seats have power ports, especially for cross-country or international flights.

Now you can find out ahead of time by consulting SeatGuru.com. There you’ll find a breakdown by airline, flight, and individual seat for such amenities as in-seat power port, extra legroom, superior location, and proximity to the nearest exit or lavatory. You’ll need to find out the type of aircraft for the flight, which could change at the last minute. Still, this might be useful information, and there’s no charge for the service.