IM curious if someone has 'myspace IM' on one of the workstations at work (small office consists of two desktops and one notebook). Some of the employees like to use 'myspace IM at work'. Couple questions,

#1. Does it post any type of security threat? If so, how?

#2. Im curious if someone is chatting with someone inside the office using "myspace IM" can the DATA (traffic) inside the office can it be sniffed by a packet sniffer from someone outside of the network? Basically, the other person their chatting with on myspace IM? All help is greatly appreciated.
CN22