Sprint's sort of following in T-Mobile's unlimited family plan footsteps when they rejiggered their plans to include unlimited options for shared plans. Now, if you add an additional line onto one of their $99 Simply Everything Talk Share plan for $9.99, each line will be able to share unlimited messaging, email, data, GPS, and everything else besides actually using your minutes to talk. For that, you don't get to share your unlimited minute bucket, but instead have to pay additional for more minutes. Hit up their release if you want the details. [Sprint via WMExperts via Boy Genius]