These projects are pitched as being linux-specific, not Dreamplug specific.
Yes they do indeed, but they use specific DreamPlug examples,
e.g. reconfiguring the open password-less Wifi connection of the DreamPlug to a more secure password protected one.
BTW: it's a nice, but bit short, tutorial.
Although the magazine contains loads of interesting linux articles,
I probably wouldn't buy it only for that 4 page article...