Google +1
The page shows how to implement Google +1 from http://www.google.com/webmasters/+1/button/index.html
It doesn't use the [[html]]..[[/html]] tags but the older codeblock/iframe combination due to the need to place the javascript in the head section of the html.
Code
[!--
[[code type="html"]]
<html>
<head>
<script type="text/javascript" src="http://apis.google.com/js/plusone.js">
{lang: 'en-GB'}
</script>
</head>
<body>
<g:plusone></g:plusone>
</body>
</html>
[[/code]]
--]
[[iframe http://www.strathviewconsultants.co.uk/support:googleplus1/code/1 width="50px" height="50px" scrolling="no" frameborder="0"]]
