Did you know that Google has its own, homegrown rival to services like Yelp and TripAdvisor? You do now. The search engine is hoping to improve the quality of its offering by handing perks to its unpaid contributors that keep everything updated. Before, they'd simply be provided recognition for their efforts, but now the firm will hand out some pretty tasty bonuses to those who make the most effort. Every review that you write will earn you a point, as will uploading photos, adding new locations to the database, fixing old errors and answering people's questions.