If you write for Yahoo Contributor Network, you can link to related articles. They do prefer that you link to "reputable sites" blah blah...but you know, they don't have time to check out every single link, so I've managed to link to my own sites on there.
You can also try commenting on Yahoo News articles and leaving a link to a relevant hub. They won't allow an actual do-follow link, but you can just copy/paste the link and delete the http:// part.
If the comment is helpful and the hub title is right on topic, it should go through. You won't get any link juice to your hubs, but you can get some traffic and potential followers.
Out of curiosity, I browsed Yahoo's current articles and found a story that is related to an article on my blog. So I "linked" to it. I'll come back and comment later on and let you know if I get any hits to my site from it.
One single "link" isn't much, though, so I'm not expecting much.
Good luck with your own promotional efforts, ChitrangadaSharan. Aloha