Perfect
Does exactly what it says it does. Serves up a web interface for looking up contacts (which you can find on bonjour. Yay for not hand-typing IPs) and does a perfect export in vCard format. Other apps do only csv and while I havent used them, Im always suspicious of csv because you never know if itll get all the fields or map / name them correctly.
Well worth the $2 even if you only use it once to recover from an address book problem on your computer.
Shneusk about
Air Contacts