The information provided by that site is incorrect
Messenger Plus Live features ADWARE but not spyware. Adware merely disaplays pop-up advertisments (for sites such as amazon) in internet explorer at random intervals. Spyware is malicious programming which may log passwords or credit card information
I can assure you that as long as you downloaded Messenger Plus Live from the
Offical Website then there will be 100% no spyware in it
For more reliable online scans try
TrendMicro HouseCall or
Windows Live Safety Center