Interesting concept - I think a little more 'value' on your homepage would work for me -- it is beautiful and sleek, but not enticing enough for me to leave my email, because I don't see what it is...
It will be a free service so not looking for customers but more for people that want to have a fix as we do for the above mentioned problems, so yes probably I'll call them adherents:) Of course we will roll out more in the upcoming days as we are still fine tuning the service.