When you make an account, you get notifications of comments and answers. When you don't, I guess you have to scroll through the questions to find yours and then check to see if it's been answered.
I didn't know you could post anything without having an account? But if you choose not to have one .. Then you'll just have to scroll through all the questions and hope you find your answers. It makes more sense to open up an account if you're that interested in following up.