With the edition of badges to the site, I'm sure we will see a lot of people doing what they can to get them. While people will think it's pointless and annoying to see people spamming the newsfeed with edits, I think it's a good thing.By nature, we are competitive. We want to be #1 and want to win competitions. With badges, people will want to collect more and more of them to cater to this instinct. Not only that, but the Wiki will become more active. People will be wanting to get badges and by doing so, they'll contribute to the site and generate more users and contributions.
While it could be pointless to some, I believe that badges will help the Wiki become more busy and active. Here's hoping my theory works out and happy badge hunting!