As the jokes are now flying thick and fast, how about a rating system? I suggest -
1 Smiley = Mildly amusing
2 Smileys = Got me smiling
3 Smileys = I laughed out loud
4 Smileys = I'm still laughing.
5 or more Smileys = Excuse me, I must visit the loo....
You're naturally full of generousity and kindness. What about the other range of comments, such as stale, mysogynistic, racist, or a limp rehash? There have certainly been some very funny ones, but if the only permitted comment is praise, one might as well be a journalist on a state-run communist newspaper.