I'm a big believer in giving credit where it is due - which is why it's always irritating to see that most blogs, sites, etc only give nofollow links.
For example, the crafts directory site I am involved with gives a do-follow link if you sign the handmade pledge. So. Finally, I've gotten around to editing my blog template, so that I can incorporate follow links in my posts.
And if you leave a comment with your name and url, you'll get a link back against that too. But please use your name, or at least something more sensible than a load of keyword spam, or you won't get anything at all.