Some users posting alot of "useless posts" but its not "spam"?

[olivercookson]

Hi,

Some of our younger members are posting really useless\pointless posts which aren't spam, but they are becoming a bit of a chore to scroll past. We have some excellent members including some great posters, but their posts are getting lost amoungst useless posts.

Has anyone else had this problem on their boards? Any ways of combating this?

Thanks