Full disclosure: This all happened with my pop-up blocker turned off.
I expect this sort of shenanigans from lesser websites, but from Inc. Magazine? This stuff makes them and their advertisers look sleazy, cheap, and desperate. In the high-stakes B2B Marcom environment it makes absolutely no sense to appear so desperate as to have to HIJACK your audience in order to get them to pay attention to you. Don't be so desperate as to force your target audience to need a pop-up blocker to thwart you.
Image: screen grab from Inc.com