It's clear that the 'thumbs up' rating system is inadequate to the task. Giving less than a five is apt to hurt the feelings of a writer, but how can we express approval of a piece of writing with more subtlety than the hammer blow of 'five thumbs up'? How can we communicate a wry grin of approval, a chuckle of appreciation, a mad smirk of collusion?
Here are some new symbols:
1) Three martini glasses means the writer should read over his (or her) draft the morning after, before publishing. Many typos could be eliminated and the writer's insanity could be masked with a veneer of rationality.
2) A psychiatrist's couch would mean that the reader's shrink would give the writer a pat on the back for venting rage without actually hurting anyone.
3) A red flag signifies that the NSA has discovered your identity and has revealed your name to the target of your satire.
Other symbols are in beta testing and suggestions from readers are welcome.