It's a resource we've all needed for years -- ever since Gogo began its quest to infiltrate each and every airline cabin in America in hopes of installing a router or two. HasWiFi is a simplistic (read: won't kill your mobile browser) site that serves one primary purpose: to tell you whether or not your upcoming flight will have sweet, succulent in-flight WiFi available. Better still, users can even vote Yes or No to whether their flight actually does have in-flight WiFi... you know, in case a carrier yanks it from one plane or installs it in another that's not listed. And if you're already down with TripIt, well, searching gets even easier. Head on over and punch in your next flight -- crossed fingers are highly recommended.