Ive seen lots of ratings on the exchange recently giving straight 10's. I would like to remind everyone that straights 10's should not be given to any coaster. Giving a coaster straight 10's is basicly saying that the coaster is the best coaster ever seen or made on NL. I personaly think there will never be such a thing as the perfect coaster in NL and no coaster should be rated 10's
Also you should take in consideration that an average mark for a coaster is about 5-6, which is the region which most of the coasters ive seen uploaded should be in.
For more on the subject of rating coaster go here