You need to spoof the traffic in both directions (incoming/outgoing). So open up two terminal windows:
arpspoof -i eth0 -t [target router] [target IP]
arpspoof -i eth0 -t [target IP] [router IP]
urlsnarf is alright if you are piping to a text file. But it can be a little hard to follow if you are trying to view live feed. For that try this setup:
webspy -i eth0 [target IP]
This will force redirect your firefox browser to the webpages that the target is connecting to. It's not perfect and has issues if tabs are being used but it's pretty cool to see in action.
One more thing, if you are spoofing your MAC before hand make sure to take your card out of monitor mode.
"The quieter you become, the more you are able to hear..."
"Drink all the booze, hack all the things."