Thank you so much for asking this question!!! I hadn't even considered that anyone would want to steal my work until I read this. I tried copyscape per one of the answers below and found that someone on justanswer.com stole the content of one of my hubs word for word and made money from it.
I called JustAnswer customer support and they promptly removed the article and are also going to have someone on their legal department in contact with me.
Again... I can't thank you enough!!!