@ohir @malwarejake OK, so you admit you filter out spam even when it's about products you use.
Regarding "returning the favor", the App Store terms of service explicitly prohibit requiring a review in order to use an app, so you're trying to guilt-trip me to work around the ToS. That seems pretty shady.
Web site operators use the same type of argument: "You read our web site, so I assume it has value to you. In which case why do you feel entitled to read it but block the ads? Why won't you enter your email address when we ask? Why won't you share a link to this campaign on social media?"
I mean, do you enter your email address to get promotional email when apps and web sites demand it? Do you turn off your browser's ad-blocking and tracking cookie protection? Tracking you and viewing ads helps their business, and is part of the implied contract for providing you with the content, right? Sorry, but I don't buy any of it.
Yes, it sucks that indie app developers have a hard time getting found via the App Store. It sucks for me as a potential customer too, because it's impossible to find good one-time-purchase apps on the App Store. I waste hours trawling through web sites trying to find good apps for [whatever], because there's zero chance I'll find them through App Store rankings. But I don't think trying to game the ratings is going to solve that problem; I haven't seen any improvement in discoverability since everyone started putting in nags to review their app, and the ratings are effectively meaningless at this point.
I think it'd be better to try serving your customers, not being annoying or abusive, and relying on word of mouth. I'm old-fashioned that way. I promote small devs' apps on Reddit all the time — even ones I decided not to buy after a trial period but thought were really good.