David Sims

David Sims is an editor and writer working at the intersection of technology, economics, and management (T n $ n M). He is an editor with the Management Innovation eXchange (hackmanagement.com) and writes frequently on web technology and commerce. Previous gigs include editor with the McKinsey Quarterly, editorial director of the O'Reilly Network, and carpenter's apprentice.

Commerce Weekly: Bump taps mobile payments

Bump gets powered by PayPal and the payments world waits for Apple.

Bump enlists PayPal's help in tapping mobile payments. Also, a columnist wonders when Apple will save the mobile payment space. (Commerce Weekly is produced as part of a partnership between O'Reilly and PayPal.)

Commerce Weekly: The do’s and don’ts of geo marketing

The evolution of geofences, Google Wallet's departures, and mobile carriers vs Facebook.

Placecast's CEO describes layers of context that make for rich, geo-targeted messages. Also, talent flees Google Wallet, and Facebook's IPO may make life harder for mobile carriers. (Commerce Weekly is produced as part of a partnership between O'Reilly and PayPal.)

Commerce Weekly: The do's and don'ts of geo marketing

The evolution of geofences, Google Wallet's departures, and mobile carriers vs Facebook.

Placecast's CEO describes layers of context that make for rich, geo-targeted messages. Also, talent flees Google Wallet, and Facebook's IPO may make life harder for mobile carriers. (Commerce Weekly is produced as part of a partnership between O'Reilly and PayPal.)

Commerce Weekly: Google Wallet vs Isis is coming soon

Preparing for the mobile wallet wars and in-app purchases continue to rise.

Mobile wallets are in their infancy, yet pundits are already handicapping future showdowns. Also, in-app purchases show increasing promise as mobile revenue streams. (Commerce Weekly is produced as part of a partnership between O'Reilly and PayPal.)

Why StreetEasy rolled its own maps

Sebastian Delmont on alternatives to Google Maps.

Google's decision to start charging for its Maps API is leading some companies to mull other options. In this interview, StreetEasy's Sebastian Delmont explains why and how his team made a change.

Commerce Weekly: PayPal's Here service takes on Square

PayPal launches a card reader, AmEx teams with Twitter, and the smartphone tipping point is mere months away.

PayPal introduces its own credit card reader, AmEx asks you to tweet it out, and Asymco visualizes the smartphone market. (Commerce Weekly is produced as part of a partnership between O'Reilly and PayPal.)

Commerce Weekly: PayPal’s Here service takes on Square

PayPal launches a card reader, AmEx teams with Twitter, and the smartphone tipping point is mere months away.

PayPal introduces its own credit card reader, AmEx asks you to tweet it out, and Asymco visualizes the smartphone market. (Commerce Weekly is produced as part of a partnership between O'Reilly and PayPal.)

Understanding place and space in a digital Babel

The nuances of location language.

Robert Munro, a computational linguist and speaker at Where 2012, says the subtleties of spatial distinctions are growing in importance as more of the world's digital information takes the form of non-English, unstructured text.

Commerce Weekly: An app to end tab walkouts

A new app lets you make an elegant exit, Square hails a cab and iWallet gets closer.

Tabbed Out pays the bill even if you leave the bar. Also, Square takes a ride in NYC taxis and an iWallet patent appears. (Commerce Weekly is produced as part of a partnership between O'Reilly and PayPal.)

Why Uber’s data fascinates a neuroscientist

The unique relationship between a brain expert and a car-sharing service.

Neuroscientist Bradley Voytek's interest in networks and nodes goes beyond the human brain. Here, he discusses the data generated by car-service company Uber and how the company has influenced his research.