By Deepa Seetharaman SAN FRANCISCO (Reuters) – Amazon.com Inc is spending more than $100 million on original video content in the third quarter, considerably higher than its spending a year ago and in the second quarter, Chief Financial Officer Tom Szkutak said on Thursday. The largest U.S. online retailer, which also reported a larger-than-expected second-quarter loss Thursday, is beefing up its digital content. Szkutak told analysts during a call that members of Amazon’s Prime membership program are increasingly streaming free videos online.