Eavesdropping on WiFi network

[Rixwel]

Hello everybody! My question is this:

In an unsecured wireless network can spy chat conversations and msn (although my computer is configured with this spy program) is not real-time, that is to be saved conversations?

And another:
If there are only two pc's in the wifi network, is it possible for a computer store to be turned off talks and msn chats or monitoring and maintaining since the last hours before another computer? (Again, be disconnected)

Nothing more, thank you very much guys!!

[techman]

A spy can not save this information if off, it is impossible, and it does not pass. Another thing, eavesdropping on a wireless network in real time, I have no idea, but if you can be a very complicated thing to do that I think any person has been removed.

[TEcH GuRuJI]

"Eavesdropping on a wireless network in real time", is called sniffer and it is nothing of another world.
SNIF a wireless network you can find lots of information, from talks to the files that are downloading at your neighbor or websites that are being watched .., etc. .. passwords.
That if there is to know how to use it. With wireshark or Ettercap can be done.

For those trying to understand what they get in the network of your neighbor with a certain "security". because if we still continue with the same intentions takes precautions (navigates using proxies, you do not suck all the bandwidth, using the network to see your post and little else, it is not going to put the whole cloth emulate)