This trick will show you all the communities owned by an orkut profile.

1. Open any profile on orkut.
   
2. Copy-paste the following Javascript code in the address bar, on the profile page.

javascript:nb=document.all[0].innerHTML.match(/[0-9]*.jpg\)/g);nb=parseInt(nb);window.location.href="http://www.orkut.com/UniversalSearch.aspx?searchFor=C&q="+nb;

The owned communities of the profile will appear in the search results of the resulting page.