Twitter doesn't count blocked accounts as ad impressions. If I see an ad on twitter, I block the account that displayed it. Invariably, there is another ad in

Twitter doesn't count blocked accounts as ad impressions. If I see an ad on twitter, I block the account that displayed it. Invariably, there is another ad in the next 3-5 tweets. I can do this 3 or 4 times in a row before I give up looking at the feed because the signal-to-noise ends up being too low when 25% of my feed are ads. My guess is that after blocking an account, the ad you saw doesn't count as an impression. It's also possible that 25% is normal, but it doesn't seem that way if I scroll and not block accounts.