A few years ago I developed a Google Chrome extension which unexpectedly got a fair share of users.
Recently, I've been contacted by a company which devolves a big chunk of it's profits to a charitable cause, and proposed me to integrate it with my extension. I'm tempted because, apart from the charity, I'd also receive a little revenue based on the number of users. It won't make me rich, but since I am a student living with my family even a little extra income can come in handy.
The script simply redirects the results of a Google Search to a web service of the aforementioned company, which then redirects to the clicked website. The redirection is fast and transparent, so the end user barely notices any change. The only data sent to the web-service is the destination URL, there is no tracking-id or anything else.
What I'm asking is: would users of my extension be outraged if one day they open the browser and a tab shows up, telling them that the extension will redirect their clicks on the Google's results through a charitable company, and that they can disable it at any time in the settings?