Google .be and you get nothing. I didn't even know there was a .be. So how will .me fair if .be is non existent.
Irrespective of what country an extension is intended for, extensions like .me and .be have huge branding potential if used correctly. Domains like insure.me and entertain.me are already worth thousands before anyone has even begun developing them. However it's all about potential at the moment - time will tell. But I anticipate the good .me domains will become extremely valuable in years to come.