In episode four, The Apprentice showed again that it believes selling is the most important skill an entrepreneur can possess. Here's our review of the farm shop task, where our original favourite candidate dived out in an unspectacular fashion.

More employees than ever before are dissatisfied with their day jobs, according to the latest YouGov survey, and a lack of career progression is to blame. If you're looking for motivation outside of climbing the career ladder, starting your own business could be exactly what you need. And if you dream of starting-up a business, here's why launching while still being employed is a great time to start.

Doug Richard is asking entrepreneurs to pitch to him for a £10,000 loan. But this isn't your average Dragons' Den pitch, this time you have just six seconds to impress Richards, and you have to present your business through Vine, Twitter's new video blogging format.

An online presence has never been more important, with tech-savvy businesses continually seeking new ways to understand and reach their target market. Here Richard May from leading social media monitoring and analysis firm Spotter gives his top tips on how any business can use social media data to build their online brand.

British customers are demanding more goods and services than they have for years, and small businesses will be investing £20.2bn to keep up. Manufacturers are leading the way, with new staff and machinery at the heart of the spending.

$1.1bn is a lot of money. The kind of money entrepreneurs lay in bed and dream their start-ups could be worth. But seven years on from David Karp's first thought of Tumblr, it's grown immeasurably in potential and has been sold to Yahoo for $1.1bn. We take a look at how it all started, and how Tumblr became worth more than the GDP of several small countries.

It costs less than you might think to start your own business. The average cost of starting-up is £312. That's less than a new iPad, a third of the price of an arsenal season ticket and, most importantly, less than what the average employee earns in just one week at work.

Running your own business brings freedom, flexibilty and the privilege of making your own decisions about well, everything. But with great power comes great responsibility and with that comes pressure.  Dealing with pressure effectively is essential to running a successful business. With that in mind we persuaded Michael Neill, bestselling author of The Inside-Out Revolution to give us a guest blog about pressure with a few tips on how you can use it to your advantage.

This week's #O2SmartaBiz competition was the biggest yet! O2 and Smarta are thrilled to present the winner, Footfall123. Pushing forward great technology is always worth celebrating. Footfall123 are doing that spectacularly with the new Time Out Card, launched last week with the business' redemptive technology. Founder, Ben Chesser, stopped by to tell us what makes Footfall123 smart. Has your business been smart this week? Let us know by tweeting us using the #O2SmartaBiz hashtag and you could be a winner too!

On the final day of the Premiership season, there'll be more than football for the camera's to focus on thanks to a brilliant charity event from Mask-arade. The mask company have organised for 4,000 replicas of the face of Aston Villa's Stan Petrov, who suffers from leukaemia, to be placed on each away seat for their match at Wigan to raise awareness for Cure Leukaemia.

Co-founder of the Smarta 100 winning company, Chris O'Nyan, told us why his company has always helped charities, and why other small businesses should too.