Do Trackbacks work?
So there are technical issues here and then philosophical issues. Yes they do work in terms of connecting IF the individuals you are connneccting with are interested in that. They DO NOT work if the role of the other persons blog is simply to shout from a soap box in terms of connecting with that person. HOWEVER, it does work to drive those who read that blog to your blog. In essence this is how you join the party.
So you can also pinback within wordpress blogs just by linking to them.