Everything that CD says is a good idea.
Yes, I shoot images a little larger than I need, and crop in. I shoot with a high resolution and get a workable image for internet use. If I was shooting for print, I would shoot with higher resolution, and use more of the capabilities of my camera. I only shoot with a digital SLR fitted with a f1.8 50mm lens. No macro or zoom. My typical shot is from 36" to 48" away from the food. One source of light as well.
I'm feeling bearish, and I'm packing a Wusthof Grand Brisket slicer from MABA
"perhaps...but then again...maybe not..."