I recently interviewed someone for a non-nursing clinical position.
At the end, he was told it would be two weeks before I made a decision. He didn't send a thank you note, but did send me a note this week telling me he was still interested. Unfortunately, his note was basically two run on sentences. The clincher was that the entire note was in lower case! My name, his name, first person reference...everything.
This is a college grad that I was on the fence about hiring after interviewing him. However, the literacy of his note was extremely poor. Why would anyone even send such a poorly written e-mail?
The point is, that follow up notes can be a plus, or a huge negative factor. So, remember that every contact or interaction creates an impression.
Make sure it's a good one.