Do think Wikipedia will ever have serious competition? 

I got to thinking about this question when I was invited to join in using Google Plus, Google's answer to Facebook (which if you have not been invited already, I would love to be the one to invite you! I believe you still have to be invited by a current user, it hasnt gone totally public as far as I've noticed). We have seen Myspace get eclipsed by Facebook to where they are predicting Myspace will be shut down next year, and now we see talk that Google Plus may be the serious competition to Facebook now (and I agree, I enjoy the extras more). So, have you ever seen anything that has made you think "wow, if someone ever did X, it could really do some damage to Wikipedia editor count or reader count", were you ever "worried" that Conservapedia for instance might threaten Wikipedia's popularity for instance? Would there ever come a time were you would encourage the Foundation to put out tv commercial's for instance, if a serious competitor did ever cut into Wikipedia.