With enough work, this could become a model for other gentle social tools, but as it stands, it's closer to spam than anything else
Wikipedia users are not very nice. But that's only partially their fault. The online encyclopedia has grown so large that making edits is more difficult than it has ever been. Over time, the number of corrections and criticisms sent to editors has steadily increased, while the amount of praise and thanks sent has decreased. But Wikipedia's own studies have shown the obvious, which is the exact opposite of how the community is currently acting: "having others compliment you on your edits/articles" is the best way to get people to edit more frequently.
So, in an attempt to solve that problem, Wikipedia has come up with an absurd experiment. Facebook has the Like button. Google has the +1 button. And now Wikipedia is getting a Love button. Scheduled to go live on Wednesday, June 29, the WikiLove button, as it has been named, is a strange attempt to convince contributors that their input is recognized and appreciated.
The crowdsourced encyclopedia can only expand and improve if it has a healthy number of people willing to spend their time writing and editing the content. It makes sense that people would be more willing to invest time and energy if they have a supportive community behind them, but it's unclear if digital pictures of cats and beer are the way to do that.