As Telegram has an Instant View Engineer vacancy, it could be a nice idea to let users choose for which sites they want Instant View support. Initial idea was to let make a public list of domains on instantview.telegram.org and let users add domains and vote for them. But option to vote for IV support could be embedded into Telegram apps, for example as one of the options on long tap: "Open", "Copy", "This page needs Instant View".