Steve, I haven't visited the link you gave yet but I just wanted to say that as far as garden writing goes there is room for almost everyone. Many is the time I have felt I was low man on the totem pole but that doesn't matter, As long as you feel you have something to say then a blog is a good place to start. Thing is, you could have the best blog in cyberspace and if no one read it then it wouldn't matter, so you must publicize it in every fashion you can think of: print it on balloons, I print mine on the side of pens I give away, put it on business cards, carry around a rubber stamp with your blog on it and stamp everything, hire an airplane to fly a banner over town, write a song about it, have a tag on the front of your car with your site on it (I do this), have tee shirts made up or make your own (yeah, I do this too), buy inexpensive wine and remove the lable and replace with your logo (I haven't done this yet but I plan to), in other words advertise. Then when you get done doing all that think up some ways to advertise on your own. Good Luck.
Eddie Rhoades
bittersweetgardens.com

DISCLAIMER: I don't make any money off my website but I do have a lot of fun - maybe too much.

PS - you're lucky someone responded as this forum is on life support.

Here is a link that might be useful: The Naked Gardener