Yesterday I decided to join Rob Conery in disconnecting my hand from my mouse for 'International Mouse Freedom Day'. What's more, this was a full real-life day at work rather than just a little experiment at home. The idea was that ditching the mouse and embracing the keyboard would speed everything up, make me more efficient and probably save the world.

Recently I've been working on a couple of sites on-and-off in my spare time which both have a couple of things in common: they both use MongoDB as a data store and both incorporate the concept of tagging. Using MongoDB's map-reduce functionality is ideal for getting the list of tags, but it does come with its own set of potential issues which are well worth bearing in mind.