I have a strange problem in my Community answers plugin whereby all links seem to have ?itemid= added to the end, for example clicking on a question on my site gives and address such as

site.com/component/communityanswers/?Itemid=149
or
site.com/component/communityanswers/myquestions.html?Itemid=149

etc, obviously this is bad for SEO and would like it to be removed, any help on how i can resolve this will be greatly appreciated.

Thanks
Martin