Squeak squeak squeak

I am in awe of the talented people who create these visual recording things at conferences and meetings.

There's a guy where I work who is particularly good at it.

A word of warning though - Don't sit nearby when it is being done.

It's hard enough focussing at a conference when so many people are typing and tweeting but the constant squeaking of a marker on paper drives me mad.

Rant over...