It's odd that this hasn't generated any discussion: http://www.weeklyosm.eu/leaked-news-big-osmf-deal
If OSMF is truly planning to implement such a deal wherein Google gets to copy useful data in exchange for funds, I would certainly stop contributing. The price tag is almost certainly a pittance (a few million per year, probably) compared to the value of all that local data, and given that Google spends billions on map data per year. This is counter to the entire reason I contribute to OSM. If this goes through, I might as well contribute directly to Google's commercial maps. And the stipend idea is hilarious and almost an insult, as it will likely be pennies per hour.