helo cooldude81,U don't need to get tensed for those type usage. I was using home 900 plan since dec,2005. Recently switched over to unlimited plan. Even i logged on during plan 500 usage at 1:30 am and logged out at 8:15-8:30 a.m. The only period should be chargeable "1:30am-1:59am" and "8:01am-8:30am. The rest is free.i can assure that. But if still u'r concerned about reality,feel free to contact the admin of DATAONE. I'm Providing u my self experience.