suffix on the product url

[maantje]

The producturls on my magento shop has een suffix like #.VSKWp_msV8E.

http://www.sunumbrellacover.com/6-ribs-sunumbrellacovers/sunumbrellacover-taupe-220-300-6rib.html#.V...

Is this normal and so not, how can i remove it?

I am working with magento 1.7.0.2

[maantje]

Solved this problem

The #. code was added by AddThis 

Here is the solution