A very short presentation exploring the various numbers involved in designing for the web.

If you liked it, follow me on Twitter! http://twitter.com/SachaGreif

Sources:

http://www.informationarchitects.jp/en/100e2r/

http://www.maxdesign.com.au/articles/em/

http://en.wikipedia.org/wiki/The_Magical_Number_Seven,_Plus_or_Minus_Two

http://en.wikipedia.org/wiki/Three-click_rule

http://answers.oreilly.com/topic/1691-what-is-the-optimal-size-of-an-iphone-touch-target/

Update: turns out the 3-click rule is a myth:

http://www.uie.com/articles/three_click_rule/