By Beth Pinsker, Editorial Director of dealnews So you're out running errands and you feel the need, suddenly, to buy a rosary. What to do? Just pull out your phone, and, with just a few clicks on CatholicCompany.com's mobile site, one will be on its way to your house. While this might not seem like powerhouse mobile computing compared with, say, Angry Birds, the simple design and homegrown mechanics were good enough to land the company on the list of Top 10 Mobile Commerce Sites for 2011 compiled by Internet Retailer magazine. "It's an interesting behind-the-scenes story," says Bill Siwicki, editor for mobile commerce for Internet Retailer, a trade publication for online sellers. "They do everything in-house. The lesson is that it doesn't take the budget of an Amazon.com to do this. All it requires is the imagination of the people working for you." Most of the other sites on the Top 10 are more familiar, but they all add something to the mix of mobile commerce that's going to keep converting smartphone users from browsers to buyers. Here's the rest of the list: 1-800-Flowers Amazon Apple App Store Barnes & Noble eBay Ralph Lauren ShopNBC Tommy Hilfiger Walgreens Beth Pinsker is dealnews' Editorial Director. She was most recently the Editor of WalletPop.com, and has been a life-long bargain hunter. Follow her on Twitter — @bethpinsker. You can also sign up for an email alert for all dealnews features.