K, so achievements are kinda awkward to view, its hard to see what you have and for what. For example I just got "Overdrive" yet I can't for the life of me find what it is.
Same with awards to a lesser extent. Also maybe a purge of users, looking through the introduce yourself tab there is so many that have been active since spring with one post. Maybe a six month cut off period If your not active, after which your account is deleted. An email could be sent prior as warning.