As ive said in another thread, contest software that does statistics based fraud detection like Gleam would have automatically removed david k (and possibly nilu, but less likely) three days ago. This is what my company had happen when we gave out a nexus phone 3 years ago, tons of contestants were identified as cheating like this, the dead giveaway was the rapid brickwall level off after the paid votes were done. Keep in mind this was for a phone with 1/400th the value of this scope, I'm honestly surprised there's not more contestants cheating than there are.
You can rationalize David K getting 1600 votes in 24 hours all you want. Sure, he only got 20 votes the day previous, but maybe he plastered an entire town or campus with flyers the next day. Maybe he bought five grand worth of online advertising to get the 500k of impressions you need to actually receive 1600 engagements, as Dave has tried saying several times.
What you can't rationalize, is after he does that, the vote stream literally disappears in a transition time of about 120 seconds. 100 votes an hour, to 0 votes an hour, in minutes. Then periods of several hours with ZERO votes. When you've plastered a town or internet with impressions, I don't care who you are, you can't press a switch and turn it off in a matter of seconds, you're still going to have impressions/votes trickle in as people stumble across it. Even a single person.
It is impossible to go 6 hours without your vote count increasing a single digit (really, his didn't increase by one the first time this happened), when less than 30 minutes prior you had more than 100,000 impressions out there bringing in 100 votes an hour out of nowhere. Software like Gleam insta-bans on this for good reason, and David K's done it three times now
I'm just staying positive and voting for my candidate, but I'm glad everyone else is catching on to how hilariously unreliable online contests are. The decent voting services use active US accounts used everyday by real people, originating from US IP's, there's nothing keysight can do outside of looking at statistics and even then its a guessing game.
Like Dave has said, id love for nilu or David to point us all to the hundreds of thousands of impressions they're getting to receive these kind of vote surges. I work in the film industry like Carlos does, and I can't open a SINGLE industry related group, page, or mailing list without seeing Carlos campaigning, and all of this is netting him half the growth rate. Searching around for Nilu and David K brings me a Facebook page for "win nilu a scope" with 10 likes and not much else.