1. Lightroom's Density slider
2. Mac OSX's Spaces
3. Lightroom's default Sync mode
4. Bing (just Google it if you don't know it is “is a search engine that finds and organises the answers you need so you can make faster, more informed decisions.” Yeah, right)
5. Why GCSE's aren't percentiles (even if Tom got 10/10 all A stars - yes!!!)

Oh, and Gursky. Go on, convince me of the value of any of these. Make my day…..