Thank you for the images.

How are your plants doing? Did they continue to decline or are they looking better?

If they're still in trouble, it would be helpful for us to see more pictures. Useful would be the general garden where they're growing, and overall shots of individual affected plants.

bedrichards, you did get a mixed bag of responses on your other post (which had made its way to page 2 of the Tomato forum):
http://forums.gardenweb.com/forums/load/tomato/msg082053272278.html?9

I think it's spider mites by the looks of the marigolds. Do you have A 10x magnifying lens? You can barely see them without one. They are red dots. Sometimes there is webbing like a spider if the infestation is bad. I would detroy the plants. Spider mites are hard to kill.

I would detroy the plants. Spider mites are hard to kill.

Difficult but not impossible to get rid of. A really thorough spraying with a Neem oil spray will get nearly all of the mite population. [Look in the Organic section of the garden products for sprays that claim to be effective against mites, spider mites, or tomato russet mites. You'll probably have to check the ingredients for Neem oil.]

First, remove and destroy all the leaves that are beyond saving. Spray under each remaining leaf -- that's where most of the mites will be found (spray the tops also). Spray in the evening or on a very cloudy day, as bright sun on the leaves (when the spray is still wet) will burn them.

Spray again after the interval recommended in the instructions.

I use Garden Safe's Fungicide 3; I buy the concentrate and mix my own. Some weeks back, I was surprised to see the concentrate at Walmart.

Sorry to misinform you. That's what my boss taught me in the garden center years ago. Maybe he didn't like to spray?