You say thank you by voting up the URL or comment. Literally saying "thank you", "I agree", or stuff like "+1" is frowned upon because it doesn't add to the di

You say thank you by voting up the URL or comment. Literally saying "thank you", "I agree", or stuff like "+1" is frowned upon because it doesn't add to the discussion (see http://ycombinator.com/newsguidelines.html http://ycombinator.com/newsguidelines.html).