I think for the Azimuth crowd Azimuth should link to Wikipedia, and Wikipedia should link to the nLab, since Wikipedia is more like the general introduction while the nLab is more specialized.

In fact I rather think I should not link to either Wikipedia or the nLab and let everybody make up their own minds where they like to look up math buzz words :-)

(But if you decide to participate in writing a blog post, you could link to the nLab as often as you like, of course)