naggingdoubt

Come back chaps! Anyone have any specific info on when they might return?

When upvoting a comment you must select between these two options. You choose one or the other, it is not possible to select both.

This would allow the comments in a thread to be sorted by 'Most Informative' or 'Funniest'.

For all other purposes, other than sorting by 'Most informative' or 'Funniest', either selection just counts as an upvote and has no affect on the overall ranking of comments by 'Best' or 'Top'.

This system only applies to the comments in a thread, and not to the posts themselves.

Edits:

This could perhaps be implemented via the use of intuitive icons, such as 'lightbulb' and 'smiley face', as per [Evolutionarybiologer's suggestion here](http://www.reddit.com/r