I think I've done my share of writing for the community.
Not counting my monthly column at Avault:
http://www.avault.com/developer/
Which I have to trim to fit in the 10 page limit.
And my monthly column at Quarter To Three:
http://www.quartertothree.com/columns/columns.shtml
Here are a few of the articles for skinning I've done:
https://www.stardock.net/media/article_branding.pdf
https://www.stardock.net/media/article_guirev.pdf
https://www.stardock.net/media/skinprimer.pdf
https://www.stardock.net/media/article_windowsxp.html
I think Mike's point is a good one and that is there might be a need to have a second skin magazine that focuses more on users rather than developers. But Tek is certainly free to use any of my articles I've already done if they'd like.
I'm just stretched too thin to commit to another column right now.