Yeah, I agree with the "blood giving" imagery associated with "Donor".
I've changed "Contributor" to "Content Contributor" and "Top Content Contributor" under the new ranking system.
I should probably start thinking about how I'm going to integrate this on the back end so we can easily add people to the "donors" group. Changing the color of someone's name (and putting that in the legend on the front page) would be a good start.
Edit: Here's the group of users I could identify (by email address.) If I missed you, please let me know
Edit: Without making edits to the core phpBB code, I can't easily add a custom image or allow people who already have special ranks i.e. Admins, Moderators to show they are a "Contributor" (naming subject to change.)
What do you think of the implementation thus far?
Here's a post with a good collection of ranks on show: viewtopic.php?f=29&t=6335