I believe exposure to the coin will be exponential when ZC is officially implemented. BUT if there are no efforts from the devs and loyals to promote this breakthrough implementation, a "popular" coin will simply copy the implementation and take the glory for its own.
Technical innovation is mandatory for success but with no media coverage it will be copied by som1 else and anc will miss it's chance to glory.
Before getting the implementation and code online for the public, a campaign should be organized to promote this upgrade.
Most of people belives in that, the darkcoin is the first one anonymous cryptocurrency, as we know this is not true, but darkcoin's PR is way way better.
High activity on twitter is good point, but just few know about the twitter page. Anoncoin activity on facebook account is low, and the fanpage look not proffesional.
And finally, the reddit fanpage look not attractive, and there are just few observers.