Salesforce.com, a tour de force in cloud-based CRM, now allows businesses to deliver personalised customer service through Twitter, Facebook, phone, e-mail and Web. Thanks to a new service, Desk.com puts a mobile help desk in every employee’s pocket, letting companies help customers anywhere, anytime?great news for employers, bad news for employees!

Starting at $49 (per full-time agent, per month, for unlimited usage) and already boasting customers including Bonobos, Klout, and Spotify, Desk.com is built with social at its core and allows any business to instantly work with customers over any major social network. Part-time users can log into the system for $1 per hour.

“We built Desk.com so that every company can deliver personal customer service in a social and mobile world. Desk.com is social at its core; its mobile app instantly lets any employee, anywhere, deliver awesome customer service; and it can be deployed quickly and easily,” said Alex Bard, vice president and general manager, Desk.com.

Desk.com looks like it could be a killer app. In today’s world, customer service apps have to be social, mobile and simple to use. The number of social networking users has surpassed e-mail users. Nearly a quarter of all time spent online is spent on social networks like Facebook, and the customer service implications of these social technologies for businesses large and small are staggering.