g0n said:

• I rarely (no more than a couple of times a week usually) -- a node. The normal reason is ill mannered, rude postings, especially those making obnoxious rather than constructive remarks about the coding ability or language skills of other monks or AMs; or flames.

I tend to -- for the same reasons, although much less frequently. I think there is more value for the votes to be casted as ++ on worthy nodes, than as -- in some negative nodes.

By the way, the few times I've decided to -- a node, after voting I find out it is already in negative :)