Anyway, I went to have a look at my pinterest account and found out that they have a Profile or Board Widget for it since Nov 2012.
This is what you have to do:
1. On your blog, go to Layout
2. Add a gadget
4. Copy this link:
<center><iframe src=”http://widgets.klout.com/badge/YOURUSERNAME” style=”border:0″ scrolling=”no” allowtransparency=”true” frameborder=”0″ width=”200px” height=”98px”>< /iframe ></iframe></center>
5. Change YOURUSERNAME to your Klout username.
6. Add a < to the start of the link, and remove the 2 spaces before and after /iframe at the end of the link.
It’s that simple! Grab your widget now!