Users may tire of advertisements, particularly on their pocket-size smartphones where screen real estate is limited.

WSJ: Facebook Revenue Rises 40% as Mobile Ad Sales Strengthen

This all changed a few years ago when I visited chef Sara Jenkins's popular pocket-size eatery in Manhattan's East Village named, appropriately, Porchetta.

WSJ: The Pragmatist's Porchetta

The latest member of the family looks just like its siblings: a pocket-size, clamshell-hinged brick of plastic, with screens on both inside faces.

FORBES: Magazine Article

On a smaller scale, Shark Multimedia's new Leopard USB modem is a pocket-size external modem that also operates with any H.324 video phone system.

CNN: New modems and related gear debut

The super-slim Galaxy Mini 2 measures at just 11.9mm, and with its colourful casing, it's great for anyone on the lookout for an easy-to-use pocket-size device.

ENGADGET: Samsung Galaxy Mini 2 available now in the UK for tiny hands and the people that have them

The Sidekick remains my favorite pocket-size e-mail device.

FORBES: Magazine Article

Motorola had plans for pocket-size, third-generation phones.

FORBES: Why Craig Couldn't Catch a Falling Star

It fits in a pants or jacket pocket or a modest-size purse.

WSJ: Two Screens Aren't Better Than One for Sony Tablet P

On a recent trip to New York City, Branagan tucked a wallet-size slab of coated steel into his breast pocket--just in case of stray bullets.

FORBES: Magazine Article

It has a detachable inner pocket, which is partitioned to enable storage of other items in addition to the camera and lenses, such as a smartphone, while the outer pocket is large enough to accommodate a tablet PC or A4-size file folders.

ENGADGET: Olympus E-PL5 and E-PM2: Micro Four Thirds cameras with OM-D-like focusing, performance boosts (hands-on)