Personally I find the benefits out weigh the cons here. How many freaking calls do you get that you end up with 200 minutes being used just for google voice? That's A LOT of calls. do you like not ever answer your phone? if you get that many calls you prob should just upgrade your minutes.... or add to your friends and family list...
Let's do a little math here. 200 calls / 30 Days = 6.7 calls per day.
I work in a job where I am away from my desk working with tools/dies/knives/inks/etc.. a lot and I leave my phone at my desk. I also leave it at my desk when I meet with people so a lot of calls roll to voicemail. 7 calls over 8 or 9 hours is not even 1 call an hour so 200 over a month isn't much but when it's 200 CHARGED MINUTES it does hurt your bill.
Look, I wasn't blaming Google or anyone else other than me for not fully thinking it through. I honestly thought the calls were being routed through the Google Voice App using Data, NOT just forwarding the call to my number. Maybe if I'd read all the details on it I would have realized that but being new to GV, Droid and Android I didn't do my due diligence. My point in this thread is to make it clear that it is FORWARDING and not USING THE APP. Apparently others on here were thinking the same as me. I don't want anyone else to be surprised.