CleanHotDry have created a new website devoted to coffee brewing called BrewMethods. Basically they find links to great methods of brewing coffee and provide links to the point at which that method originated. Simple, elegant and very useful.
Happily they have not attempted 'espresso' as a category. The sheer number of machines with all their little vagaries would have made that a complex exercise beyond some basic principles.
Tip o' the demitasse to JimSeven. >