Are tomatoes really bad for you?

According to a bunch of ads on the Internet, tomatoes are supposed to be bad; according to these ads, tomatoes cause arthritis pain. Do they really?
I'm an old lady with osteo arthritis and I eat tomatoes all the time and have never noticed my arthritis pain getting worse. I grow tomatoes in my garden every year so maybe it helps if it's organic, the way I grow them.

Anyone else here have an opinion or experience eating tomatoes? Anyone see or read those ads?