I suggest to add this feature of retroactively gaining badges. Badges that gained based on quantity of visits/answer upvotes etc shouldn't be relied on tracking. For example, say I'm a somewhat new user, and my answer got upvoted while I was tracking the "Informed" badge. I will not receive the "Supporter" badge even though I have at least one answer getting upvoted because I didn't track it; After getting the "Informed" badge and having answers being upvoted, I will not get the "Supporter" badge retroactively even if I then track it, only when one of my answers will get upvoted again. Not cool guys.
Let us gain badges fairly, even retroactively.