Planning a vacation often revolves around the delicate art of booking flights and hotels at just the right moment to get a great deal, and Google knows it. The internet pioneer is rolling out a slew of updates that, for the most part, are focused on getting you the best possible bargain. To start, you'll see automatic "deal" labels in searches whenever a hotel rate goes below the norm, and tips when tweaking the dates of your stay could save you some cash. You can also filter hotel searches for very exact criteria -- if you want to look for four-star hotels in Chicago that allow pets, you can. The tips and filters are only now rolling out (filters are limited to the US at first), but they'll be available worldwide over the course of the year.