[Simon Lloyd]

Spinball, i'm kinda with you, i have many many threads where the OP has thanked almost every post so i guess what would be great is:

If a user has already rated a members post (Post "A") as helpful then that member subsequently posts an updated more helpful post (Post "B") and the user clicks that as helpful then the previous helpful mark should move from post "A" to post "B".

In the OPs eyes i guess every post is helpful if its positive but for those searching, the best solution is more helpful.