Setting aside the general question of Perplexity being an ad-supported service, I don't like that it's unclear exactly what the advertiser is sponsoring. Are th

Setting aside the general question of Perplexity being an ad-supported service, I don't like that it's unclear exactly what the advertiser is sponsoring. Are they just paying for the suggested query to appear? Or do they also get a say in which sources the model uses to craft it's answer? Or even get to preview and approve the model's response?