I like the current banner without the "all poster forum". I would put that information to the right of the banner where the useless 'Also visit the All Poster Blog" is taking up space...
Something like...
All
Poster
Forum
(either centered on left-justified)
Otherwise, the banner need to be centered across the full page and the 'all poster forum" text needs to be centered on the image.
The other option is clichéd mediocrity...