Ariel Bogel says her last goodbyes to Start Up and introduces Mashable Tech Reporter Johnny Lieu, who will be taking the reigns every Wednesday from now on. Twitter adds anti-abuse feature, then removes it after two hours. The company gets slammed for taking the wrong approach to abuse. Snap Inc, a.k.a. Snapchat is set to go public in one of the biggest tech initial public offerings (IPO) to date. But will it hurt them, like it did with Twitter?