So what exactly would the benefit be of an anti-virus on Android when there aren't any viruses to infect the OS?
The answer: Malware
A quick lookup of this app on my Droid Eris shows that it asks for Internet access. That's fine - for updating (nonexistent) virus databases right? However, it also asks for your Browser bookmarks, contacts, texts, system settings, LOCATION, running apps...suddenly this app gets a lot more intrusive. Coupled with the fact that there aren't any viruses for Android, what else could this app be?