This has been a staple corp card in my meta since it came out, mostly replacing Wall of Static and definitively replacing Paper Wall as cheap gear-check barriers. In rush-oriented decks, I always see either this or Wraparound, often both. It looks crappy, but 0 credits for an end-the-run is great value. You can put up a guerilla scoring server early on and crank out an agenda or two, and the 0 rez cost will preserve your momentum if they decide to test it. After the fracter comes out, it's still a one-credit tax for free, maybe even a Cerberus "Lady" H1 counter. The big drawback is that Parasite can instantly kill it, but then, they've also wasted a Parasite on a Vanilla. Overall, many decks could find a place for Vanilla - just run something more substantive alongside it.