I think that article really missed out on a unique angle, especially coming from a "family handyman" perspective. One of the best things for home routers stability is making sure they have plenty of airflow, and where they have those screw mount templates, they LOVE being mounted on a piece of wood or cork, or directly to a skirting board vertically.
My not entirely anecdotal evidence of this, was a conference center that a company I used to work for fitted new Wifi access points around the whole place, they already had multiple internet connections, with 6 Idential stock routers (belkin or dlink or some such, I can't quite recall the brand). Originally they were stacked on top of each other until the whole project was finished, and the ones at the bottom of the stack would regularly overheat and lock up, and were all round worse than the one at the top. One of their handymen an ex-electrician, wall mounted them, the same kind of way your electricity meter is with about 10cm of space between them, from then they never locked up, never slowed down, never needed rebooting, and easily went for hundreds of days uptime just working.
Ventilation and good airflow will immensely help your router's stability and a lot of other electronics too. Much more so than any of the tips in that article. I've tried to follow that principle ever since, my current router is the ISP supplied fritx box, and previously was the virginmedia supplied hub. I never reboot them, and never have problems (aside from virginmedias occasional outages).
I also subscribe to the "if it ain't broke, don't fix it" philosophy, and think rebooting your router just because, is a placebo.
Toby