why we can not see last seen of some user in codechef?

@admin why we can not see last seen of codechef users as it happens in codeforces. If possible add this feature so that wee can see last seen of others. One more thing, in codeforces I can add a user as my friend but in codechef it is not possible. I request you to add these features.

You can see the last seen of peoples here in discuss. but that shows the last time they visited codechef discuss not the main site so not of much use.

yeah I know that so i asked for. It should be like codeforces, they show last seen as facebook and whatsapp :smiley: