LinkedIn Apps - Are You Using Them?

For the past week I've been playing with the LinkedIn apps, but I haven't really found one that I'm that keen on... I like some of the concepts, espcially Company Buzz, which tells you how often your company is talked about on LinkedIn. I also considered adding, Blog Link, and probably will, but just not that interested in it yet. I guess the bigger question I need to ask myself is how much I actually use LinkedIn????

To be perfectly honest, I'm more interested in what applications I could add...