Double post! people don't see edits if it's days later... /excuse
Use the whole range of votes people! There are such rating as 1,2,3 & 4 too, if people only care to vote when the thread is EXCELLENT! the whole point of a rating system is null and void.
The author have no clue what he's doing, and/or writes false information? 1
The tutorial is shallow and offers very little (but correct) useful content? 2
Is the tutorial informative and straight to the point/short? 3
Is the tutorial really good, but avoids going into detail? 4
Does the tutorial explain well enough to leave the reader (both new and old mappers) without any (major) questions, and teach old users new things or handy tips? 5
This is how I rate threads basically. Of course the topic and 'size' of the matter is important and you can't judge all threads by the same standards. But I think people should really have some guidelines to their votes, just a little.. so we don't get swamped in hundreds of 5.00 Goldstars, good sir! posts.
(The jumps between 2<->3 and 3<->4 are a little vague, but it works in my mind

difficult to put in into a single line!)
4 is a really good rating! You should not feel like your putting someones thread down by voting it 4... it just means the thing wasn't bloody PERFECT!
Well, have fun. Just wanted to say that a vote system doesn't work if only the extreme votes are submitted.