Geoff Varrall of RTT writes:

About 15,000 years ago some indigenous Northern Australians decided that they needed a more efficient way of talking to each other than just shouting a lot.

And blowing into a long cylindrical tube proved to be just what was needed and seriously useful fun – the dawn of the didgeridoo.

Trumpets and bagpipes were invented at about the same time. The ancient Greeks used the trumpet in battlefield communication to devastating effect.

The way you can tell that your didgeridoo is better than everyone else’s didgeridoo is to blow into it and see how far the sound goes.

Mark Bridge writes:

Any sufficiently advanced technology is indistinguishable from magic. So said Sir Arthur C Clarke.

Last week’s magic was supplied by imaging company Scalado, which announced a new product called ‘Remove’. The clue’s in the name: it can automatically remove unwanted people from photos taken on a mobile phone. Expect to see it on a handset near you before too long.

Mark Bridge writes:

It’s not been a good week for Nokia staff, with 4000 of them likely to lose their jobs from factories in Finland, Hungary and Mexico. The company says it’s moving device assembly to Asia, where it’ll be closer to component manufacturers. The three scaled-down factories will remain open with a new focus on smartphone customisation.

Mark Bridge writes:

Facebook’s certainly had its share of privacy concerns – but last week the social network revealed plans to go public in a very different way. It formally announced its intention to launch on the stock market; what is known in the USA as an Initial Public Offering. The IPO is expected to raise around $5 billion, although that’ll just be a fraction of the total (and as yet undisclosed) value of the company.

Mark Bridge writes:

If you want a big money story from the last few days, you want Apple. The company announced its highest quarterly revenue ever, hitting $46.33 billion (£29.66 billion) with record quarterly profits of $13.06 billion. That’s probably enough money to buy the moon, assuming Newt Gingrich is prepared to sell it – or, in the real world, is one of the biggest quarterly profits ever.