I am actually not going to tell you much about this, other than it is totally legitimate and could act as a source of high quality links and trafffic… the type who not only might click through to read what you say, but also write about it.
It is slightly old school, but not talked about, in fact most people just talk about doing this in reverse, but both ways can be effective. Take a look at this PR Stunt.
I should also point out it doesn’t only provide links, but also content in raw form, plus hot stories that are news stories that haven’t happened yet.
P.S. I did check out the links, and they do show up in both Yahoo and MSN. I would have expected a Google link to show up as well but I wouldn’t worry too much. It is legit.
Update: Sorry I just corrected the link