What device have you been tethering on for the past 4 months?
My statements are regarding the Bionic which hasn't even been out for a month yet.
Have you been using the Hotspot app or other means of wifi tethering?
for myself i have been using thunderbolt and the charge. the program i used was wirelesss tether for rooted people. i have yet to seen a charge. i hope osomeone can ifnd a way to block the monitoring from verizon soon.