Those of you who (a) are technically savvy, (b) are switching from Google Voice to Phone Power, and (c) would not like to be taken by surprise when you get socked with an unexpected bill for going over your monthly limit for free international minutes, may wish to check out the Selenium script I just posted (http://blog.kamens.us/2014/04/20/using-selenium-to-monitor-phone-power-international-call-usage/) for monitoring your minutes automatically.