I thought some might be interested in this article over at Mother Jones about incorporating weeds into our diets.
As my readers know, my BF and I do some of this. We don't forage much, because our knowledge is limited, but we are educating ourselves. We do cultivate both English and black seed plantain, dandelion, and wood sorrel and frequently use them in salads and on sandwiches. Our dandelion does not get out of control and take over our yard, either. We have a patch here and there, and I have not seen it spread.