I thinks it's unnecessary, of course, but it's a "little-process". You can compare with Ad-Aware free process
.
Ah!! i like more SuperAntispyware.
I scanned my PC with AVAST!, AVG AS, SS and RemoveIT(free version):
-AVG AS(the "great and famous" AS) didn't found nothing.
-SS found a threat.
-RemoveIT found the same thread.
Until i'm sure isn't a FP i don't delete or quarantine nothing.
I run runscanner(a great tool if you understand the results) and yes, i was infected, becuse RS showed "strange entries" in the regisry.
I run again SS and i desinfected my system. Whith help of RS i fixed bad entries of the registry.
I run again REmoveIt and SS and my system was again clean.
I mean, AVG AS isn't the mega-super-great-the best antyspyware.