this may be a stupid suggestion - I am not a techie person...
but what about using one of those auto gallery pro scripts
and using the thumbnail sample of the font as the thumbnails
displayed as if it were a gallery... and have the CATEGORIES
be the niche you think the font would look good in...

or maybe not even use the script - but display them on some
html visual sample pages for yourself and have the individual
pages holding lots of thumbnail samples - in diff. folders...

with each folder being the niche...

if I see anything out there I'll let you know - it would be useful
to have something to manage fonts...

if you find something - please post the info here in your thread...

thanks...

~Bell