Job Hunt Log the Second: In Which I Collect a Lot of “Sorry You’re Not What We’re Looking For” Emails

So far, I have been collecting a lot of "sorry you're not what we're looking for" emails. Sometimes these letters also contain a "but we'll keep your resume on file/please keep coming to us as jobs appear," factor that may or may not be legitimate. I find these letters whether or not they include a "we'll keep your resume," to be kind of disheartening, which I think is not the actual intent of the letters.

I have been told that follow up is extremely important.