i was kind of curious about this anti-virus myself and being new to Android really wasnt sure if it was necessary. someone in this topic stated as long as you stick the android market you should be pretty safe, which makes sense..
but as far malicious hackers not bothering w/ making worms & viruses for smart phones because this market is so small.. that may be true now, but i think they may start focusing more on these platforms as more & more people are purchasing these devices. and people are doing their banking and have more info stored on their phones like cc#'s, and bank log-in's ect ect, thats what the criminals are after in the first place, this will just be another huge direction they can go to obtain your info and i think theyll do what they can to obtain it, just my opp.