I would like to know, from your experience, if having a link on Wikipedia could generate some traffic to the pointed site.For example, the references at the end of this sausages page points to :http://www.argentina.ar/_en/country/C161-the-gastronomy/...do you think that site is getting some major traffic from Wikipedia?
Is Wikipedia a good source of traffic?
traffic
One other thing to note, the links within Wikipedia are rel=nofollow so you won't get much if any SEO value out of the links.  Your only real value is people following the links.  And again, as @Srirangan said please don't do it at the cost of degrading the Wikipedia page's usefulness. If you do, you are most likely going to get your changes removed anyways.