Thanks for your replies!...but my main worry is that this system can relegate popular and competent work to the bottom of the pile because the rating is not the perfect 5.0000.
 I am talking of the ratings for individual Bryce genre which used to be a good quick referrence to some of the best work!
 An image may be 'rated' by 30+ members and if just one rates below 5,this work will be superceded by any pic with a 5.0000 score rated by 1 or 2 folk.
  I use the top 100 ratings and top100 comments to(hopefully!)access some of the best Bryce work posted on this site....'cause I'm lazy.So I assume many other members do the same!
 Sorry to bore you all with this but I think a simple 'yes or no'rating system works best!
 Regards Jed.