You have to know that I read other writers' work too. That's what brought me to this site.
I recently took the time to get myself set up as a reviewer, and I do like to write reviews of stories that make some sort of connections with me. There are some good ones out there.
You might want to consider that, too. It's nice indeed to take the time to drop a writer a note, but you might also want to think about making your assessments public, for the view of others.