Hi Dan.
I have one of the 70-210/4s which I picked up for song last year. It's a nice little lens, it's light and nicely sharp and has the bonus of being f/4 instead of variable aperture. However, as it was Nikon's first AF tele, the AF is slow and unreliable at best. Even on my d300s using the centre AF point it can be well off, so I wouldn't recommend for wildlife. I use it occasionally for landscapes, but even thats annoying as the front element rotates and is pretty loose on my version so when your in MF it moves at the slightest touch.
Hope this helps!
Stu