We have some experience, but not very much experience, with the concept currently under PIPEDA. Under the act as written right now, while we don't have the ability to refuse to investigate or to discontinue an investigation, the commissioner has the limited ability to not finish an investigation or issue a report in a number of situations, including those in which a complaint is trivial, frivolous, or vexatious. The office has looked at it on a number of occasions as potential candidates for that situation, and my understanding is that never once have we found actually a situation that would be considered within that category. There is a reasonably high threshold legally to be able to justify rejecting or discontinuing a complaint.
On June 18th, 2009. See this statement in context.