What's not to like about this card?

It's a virus. Noise and Djinn loves viruses.

Yeah, the Corp can purge it, but judging on how well you read your opponent, you can use Clone Chip to install it again and stop the incoming fast advance.

And if you're Noise, you can mill 'em while you do it. Love it, though it DOES incentivize the use of antiviral suites... —
Plus it's a good addition to a Professor deck —
oh man, f-ing clone chip! wow what insight there buddy! sick! in response to an install, advance, er hold it one sec. clone chip->Clot go! wow —