Vitaly calls them dirty tricks but this is a handy collection of front-end development techniques. They’re not really dirty …just slightly soiled.
A really good introduction to front-end performance techniques. Most of this was already on my radar, but I still picked up a handy tip or two (particularly about DNS prefetching).
At this stage it should go without saying that you should be keeping up with this kind of thing: performance is really, really, really important.
A lovely bit of hypertext.
Some good ideas for formatting tabular data for small screens.
A nice round-up of responsive design techniques, with a particular focus on content first.