Stuart,
Good point and I have looked into that possibility in the past.
Here is my photo album:
http://www.mapleleafup.net/forums/album.php?u=2
And here is a picture linked from there:
What I have to do is to check the possible picture sizes and access by non-members. Each time a non-MLU member accesses a full-size photo, this means internet server usage (and thus cost). That is why non-members can only see thumbnail photos, and not the full size ones.
Regards,
Hanno