Whenever I (rarely) host a server, I only give admin to my closest friends.
Admin applications are a joke.
Both 'he's my friend he gets admin' and 'he has good application he gets admin' are dumb ways of doing it.
When people make their friends admins, it tends to go like this:
well forget, i'm the hosts friend i can forget around all i want and not get in stuff
oh, my friend is trolling these guys, so loving funny
Applications is taking it too far and you could possibly be letting a huge liar get admin.
I, personally, give admin to people I've seen be good admins.