There's been a lot of talk about this lately, so when I was on the line with a Verizon rep I thought I'd ask. Granted Verizon reps aren't always the most knowledgeable so take this for what it's worth. I asked about the data plan and she confirmed that it's the Air cards that are limited to 5GB. Currently there's no limit for phones. I then asked about tethering. She told me that since the Droid doesn't do tethering there are no limits. I inquired about third party apps that provide tethering and she responded saying that because those apps are not provided by Verizon they are not considered tethering, rather falling under the data category and are therefore unlimited.