I think you nailed it, Christine! Thanks so much!
Just read this about it:
"Beneficial use in ecological pest control
Chenopodium album is vulnerable to leaf miners, making it a useful trap crop as a companion plant. Growing near other plants, it attracts leaf miners which might otherwise have attacked the crop to be protected. It is a host plant for the beet leafhopper, an insect which transmits curly top virus to beet crops."
Maybe I should site it in a few trouble spots?
Sounds like it is a pretty robust weed, though...