Hi.
I was looking for metronome to practice guitar and yours is indeed the best out there. ;)
I am also frequent visitor of justinguitar.com site. I guess you heard about it, if not then you should check it out. Basically it's the most popular free guitar lesson site on the net. That guy is currently searching for online metronome to use on his website and I thought that this could be a great opportunity to take your metronome to masses. ;)
If you interested I guess you should drop him a line.
Best regards,
Luke