Users can then come back at a later time to look at items of interest, or easily compare multiple items from different searches.

FORBES: Taking On The Comparison Shopping Gorillas

Price and value often dictate hot theft items, with multiple grocers saying the hottest theft items right now include Tide detergent, Gillette razors, infant formula, electronics, batteries, fragrance, and over-the-counter drugs, particularly Prilosec and Abreva.

FORBES: Why Do People Steal Meat From Grocery Stores?

Each uses an Internet service -- iCloud in the case of Mountain Lion, SkyDrive with Windows 8 -- to share data, settings and other items between multiple computers and other devices.

CNN: Review: Mac's Lion adventure continues

REI's Web site, launched in 1996, is the Internet's largest store for outdoor gear and clothing, with 30, 000 pages of items, many with multiple views of the products.

FORBES: Backpackers meet bottom line

REI's Web site, launched in 1996, is now the Internet's largest store for outdoor gear and clothing, with 30, 000 pages of items, many with multiple views of the products.

FORBES: Backpackers meet the bottom line

The larger sellers often try to unload multiple--and identical--items.

FORBES: D-Day for Ebay

The collaboration involves multiple brands, retail and fashion with gift items from 24 well-known designers, all members of the Council of Fashion Designers of America (CFDA).

FORBES: Target + Neiman Marcus And A Lesson In Multichannel Retailing

Other applications allow multiple social-media users to chip in and collectively buy items, and some let shoppers make payments to merchants without leaving the social-media sites.

WSJ: Merchants Push Sales Through Social Media

Better yet, by acquiring several coupon circulars each week, consumers will have multiple coupons to use during sales and be able to stock up on their favorite items at low prices.

FORBES: Six Sneaky Ways Coupons Make You Spend More