X axis category isn't working properly with duplications.

I'm trying to create a graph with the x axis using a category type.
It seems that whenever a value appears more than once on the ais the value is switched with numbers instead.
I could find a fix for this.

Any solution?

http://jsfiddle.net/vyhrg7cx/1/

in this example "www.site1.com" appears three times as a name and the other appearances just disappear.
I want all the values to show on X axis.