This card can get more mileage if you use Rebranding Team in your agenda suite. But paying 1 per advertisement that you bring back makes this kind of expensive.
Of course, it would be even more expensive for the runner to trash all those assets (and ices). See this review for the list of cards (in Q2 2023) that could be brought back by Ad Blitz. Of those cards, here are the one that would actually help you get back credits pretty fast while costing more for the runner than for the corp : Tiered Subscription, Launch Campaign, Marilyn Campaign (which then get shuffled back), Special Offer. Those will ensure that you are ahead of the runner in term of credits.
But this will usually just prolong the game. It can still be a nice panic button, but if you can pay 5 to 8, you were probably not in such a panic.
But there is a twist! We now have Extract and Svyatogor Excavator in the meta. Those pairs really well with bringing back lots of small assets that you can trash. At one influence, Svyatogor Excavator can be imported in NBN to get more credits faster, or just to feed it assets like Launch Campaign and Marilyn Campaign when they are on their last credits, thus gaining a credit more than what it would have brought.
Finally, at one influence, Ad Blitz could be imported anywhere (except Jinteki, which has few advertisement). It could be used by Ob Superheavy Logistics to bring back assets that it can trash and trigger its ability. It is a janky possibility, if you are into making funky decks.
While the art portray a future city with flying cars, it fail to makes feel like the effect of the card (or its name). Only the name of the card clue us on its effect. A quote would have been easy to fit. A little more efforts would have been better.