You can’t feel your leg. You’re pretty sure you have deep vein thrombosis (DVT). You are stuck in one of the worst seats on the plane for your 7-hour long, cross-country flight. 
With the help of our friend the Internet, this situation could have been avoided.
The site: www.seatguru.com
What is it: With seat guru you can find the best seat before you fly. Select from the database the kind of plane on which you booked your flight. (Note the type of vessel is available at the airlines Web site or on your plane ticket.) Seat guru will provide the seating chart for your flight with information on seat width, pitch, and comfort. The site offers:
- Detailed seatmap graphics
- In-depth comments about seats with limited recline, reduced legroom, and misaligned window
- Color-coding to help identify superior and substandard seats
- In-seat power port locations
- Galley, lavatory, exit row, closet locations and more