Same page from different locations has slight different URL, is it a negative SEO practice?

[showme]

Hi,

Recently we made change in our website link generation logic, and now I can reach the same page from different pages with slightly different URLs like this:

http://www.showme.com/sh/?h=wlZJNya&by=Featured_ShowMe

and

http://www.showme.com/sh/?h=wlZJNya&by=Topic

Just wondering is this a bad practice and should we avoid it?

Thank you,

Karen

[iAnalyst.com]

Yes, if Google see's both it isn't good. Neither are search engine friendly URL structures either. I would at least set up a canonical tag pointing one to the other, or ideally modify the site so only one URL exists and 301 redirect the others.