syamexpress on "Unusual characters at the end of thread url"

my site is

http://www.webdesignsys.com/

if you click any of the post,then in at the end of the url there are charecter set "#.UQvL7R2zfIY"

its showing for every url.

i am using the permalink structure /%category%/%postname%/

i did't made any changes in the code.

please help me looks very ugly.