Thumbs up in project comments

I’d like to suggest adding a feature where we can quickly acknowledge comments or activity of other users in the “Activity” sections of projects. Generally this is something like a thumbs up button where somebody can click on it as a way of simply letting the person who made a comment or any kind of post in the activity center know that they have seen their submission without needing to take the time to type out a comment informing them they have seen it.

Thanks!