But is jealousy what it's all about? Well, according to popular website GetJealous.com, travel is all about green eyes. GetJealous.com allows users to stick their tongues out at those of us who have to work for a living and says 'Suckers!' It also says 'Look at me! Look at the fun you could be having if you were me!' Isn't it sickening?

Well, not to some. In many ways traveling has always been a fun way to 'escape' to the other side, the only difference is nowadays we can see people's travels as they happen. Look on the positive side we no longer have to sit through hours of someone's slide show, because we've seen the whole thing on Facebook already.

For that reason alone, travel social networks should be thanked. But they do serve another purpose connecting people. Have you ever met someone overseas and failed to keep in contact We all have. But this can all change now, as travels can easily hook up with their new buddies by checking out the routes. Travelers can even upload their maps and travel plans to arrange meeting in the same place.

Sites like Travelistic and WAYN are now big travel news on the net. And in many ways real social networks are being created from virtual ones. People are now offering couches, cheap accommodation or spare bedrooms all over the world by swapping online. So if you thought travel social networks were a waste of time, think again.