(of "" and "") and (of "") join and for the one-hundred forty-eighth edition of the GeoGearHeads, our twenty-eighth Randomize show. emailed about "" () and "" () as well as some thoughts about appropriate cache placements. emailed about tracking apps on smartphones and how they can be used. The crew also talked about the service. Congratulations to for submitting the winning response for this week's question and . Thanks to for their donation of this week's gift! The live video session from this Google+ Hangout On Air can be found on .

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