imbooster.exe is the main executable for a process belonging to IMBooster software from Iminent. IMbooster is free additional software designed to extend the feature set of messaging clients such as Windows Live Messenger and Yahoo! Messenger.
Non-system processes like imbooster.exe originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that over time your registry suffers fragmentation and accumulates invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues