Yeah, I sell on Craigslist regularly and use Ghost Surf.
You need to go into "Privacy Control Center" and enable cookies and all should be well, then when you finish surfing, block cookies again.
I have found that sometimes I have to lower the anonymity level to get in C-list but no worries there as C-list is relatively benign as far as snooping goes.
Just my personal experience and $.02.
I tried using EzAdSuite on Craigslist, and it was a waste. I keep hearing about people still making good bank off of it, so I guess I'm gonna have to take another look at it.