Healthvana lets you quickly share sexual history with partners via smartphone
                                
                                
                                    (Newser) -
                                    You're dating, things are going great—and then comes that awkward moment when your partner casually inquires, "So, hey, um … got any STDs?" Well, next time that happens, you can verbally relay your sexual history or you can whip out your smartphone and call up Healthvana, a...