Digital ads like this are interesting because someone can buy the ad and potentially have it show up instantly (for a fee) so you can actually get an ad to show up during someones youtube live stream
@dclick was an old steemit /steem based banner /text adsense style system for posts with signature ads in your blog posts and clicks measured and steem paid out. It worked really well to get ads for my steem based projects seen in comments on top front page posts of authors who used dclick ... it was a nice extra income when it was working too... fun to display ads and get paid or to pay for ads