mikesd81 writes "Boston.com reports that Netflix Inc., the largest US mail-order movie-rental service, may suffer a cut in profits if the US Postal Service starts charging extra to manually sort the envelopes that carry its DVDs. An audit prepared by the Postal Service's Inspector General last month recommended charging one unidentified company 17 cents per envelope for labor costs. Citigroup analyst Tony Wible, who said in a note to investors Tuesday that the company is Netflix, estimated the charge might reduce profit per subscriber to $0.35 from $1.05. Wible advises investors to buy Blockbusters shares because their DVD envelopes don't have the problem (floppy edges that jam the USPS's automated sorting machinery). Netflix says the whole thing is no big deal and they will change their envelopes if necessary."