There is one problem. Currently the What links here function only provides the first 500 entries and it even doesn't tell if there are more articles linking. For vote counting and an SQL script can be used to circumvent this limitation, but it still poses a problem for this Simple model for expressing opinions --Juxo 16:33, 23 Sep 2004 (EEST)
See Meta on What Llinks here for more information on this.
There is also a problem in placing Campaigns in Group-namespace. Consider that a joint virtual organisation is set up to drive the campaign furher it would require the campaign to be moved from the originating organisations space to the new organsations space. Now all the previous votes would still point to the previous location of the campaign. Maybe there is a way to get around this by using redirecting and/or special link tracking