Is This Helpful (ITH) is a simple web service to get feedback about your online documentation.
Register the domain name of your documentation site on ThisIsUseful and add the following code to your HTML template:
<head>
.....
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
<script src="https://is-this-helpful.herokuapp.com/ith_widget.js"></script>
....
</head>
<body>
....
<div id="ith-widget"></div>
<script>
ithWidget();
</script>
....
</body>
Very very alpha.