One of my favorite services is unsubscribe.com. It’s a gmail plug-in that with one click lets you rid your inbox of unwanted newsletters. I recently analogized newsletters to tending a garden. You have to stay on top of the weeds or they get out of control. Unsubscribe.com lets you do that. With this as a backdrop, I was pretty surprised to receive the following in my inbox last week: Thank you for being one of our paying customers, your trust and support helped propel us to where we are today. With that being said, I’m excited to tell you that beginning yesterday, August 4th, 2011, we have made our full suite of products (Email Unsubscribe and Social Monitor) completely free, which…