More evidence that Verizon is near launching its shared mobile data plans has surfaced in the form of a screen capture put online by PhoneArena. It shows a configurable calculator that will help families decide whether the shared plans are a good fit. The calculator will ask users how many e-mails they send per a specific amount of time, how many websites they visit over a set time period, and how many minutes or hours of online gaming they perform, among others, in an attempt to estimate how much data they need per month.