If you've ever been at a large public gathering attempting to connect with your buds, say at a concert or music festival today's tip is for you. A couple of programmers have created what they call "the dumbest app ever created" that's actually pretty useful in these situations. It's called 'LookFor' and it's simply a way to turn your smartphone screen into a blinking beacon so that your friends can find you in a large crowd.and#160; You just open the app, choose your color and hold it high in the air so you can tell your friends to look for that color blinking in the crowd.and#160; LookFo can help you hail a cab, connect in a dark club or just about any situation where standing out in a crowd is helpful.and#160; Now, you can reward this brilliant idea by buying the app for either your iPhone or Android device for 99 cents or you can do a search for one of the many free flashlight apps that may do something similar.and#160; Look for flashlight apps that use your smartphone's entire screen instead of the flash on the camera that also blinks. LookFor app website: http://www.lookfor.cl