Clarence - 10:23 am on Sep 24, 2012 (gmt 0)
You're right Vibrant does require around 500k impression "I think" a month, and this doesn't have to come from a single website. I have 8 websites so the traffic combined reached that per month when I applied 2 years ago.
But you could possibly email them. When I first applied I wasn't doing 500k a month, but I emailed them, told them i made X on Adsense, and someone recommended them to me and I wanted to switch from info links.
I was approved in like 24 hours.
But Vibrant is diff from Adsense, Each code is specific to a single site, and every new site you have to request a new code. But the beauty is, the in-text ads aren't general, they are specific to your site, because they put you sites into a category "Travel, Auto, Finance, etc". So the ad are very relevant, but each site requires a manual review and Vibrant does the categorization of your site.
So I would say Apply, Then email and let them know that you monetize with Adsense and Infolink and looking to earn more.
I think they set their standard high to prevent all the spammers. The problem with infolink and Kontera is their standard are so low, and anyone get's in. So the spammer get in, put the ad on scammy site, or click on their own in-text ads, and the Good advertiser leave.
If your site get OK traffic, isn't spammy, and earn $1,000 plus per month from Adsense they will def let you in, that' more money for them.