1. [[shell-fu]$](http://www.shell-fu.org) lists handy, or just plain cool, Unix shell commands. You can learn some shell scripting through the great examples on this site.
2. [FlowingData](http://flowingdata.com/2008/03/20/win-a-copy-of-the-visual-display-of-quantitative-information-by-edward-tufte/) is giving away a copy of Tufte’s [The Visual Display of Quantitative Information](http://www.amazon.com/gp/redirect.html%3FASIN=0961392142%26tag=harmonicfunct-20%26lcode=xm2%26cID=2025%26ccmID=165953%26location=/o/ASIN/0961392142%253FSubscriptionId=0PZ7TM66EXQCXFVTMTR2). To enter, post a comment on any new post on [FlowingData](http://flowingdata.com) in the next ten days.
3. [Terminal tip](http://www.tuaw.com/2008/03/21/terminal-tip-safari-3-1-brings-true-one-window-mode/) to have all links open in tabs of a single Safari 3.1 window. This is one of the reasons I switched from Safari back to Firefox recently (the other being that the Firefox 3 betas have fixed the issues I was having with Firefox).