The first thing I'm going to add is add a log so that you can actually see the status of your site over time. Then I'm going to start cleaning things up and probably add a couple of features I would like to have.
Yea, I've done my share of marketing. I don't know if I would claim I'm good at it or not. Right now, everything is a bit rough, so it needs some work. I just wanted to get something out and start getting peoples thoughts. If I decide to move forward with it, I'll clean everything up, and create a better landing page for it, explaining features, etc.
This isn't anything new. There are other monitoring apps out there, but some of them are a bit expensive. I'm thinking about charging half of what the others charge.
It basically pings your site every 5 minutes and checks for an html status code of 200 OK. If it gets anything different or can't make a connection it should send you an email. I need to add some logging so people can view it's history. I'm also going to add element checking, so that for any given URL, you can add something on the page that you want it to check too, like whether or not a link exists or a button, etc.