I had to resurrect this old thread for a small update.
I used Yahoo Domain services for about 4 years without any problem or even minor issues. In addition to the first domain I bought with the 2.99$ offer, I subsequenty bouth other 3 and it all went very smoothly.
But now that the one of the domains renewal date is approaching, they had kindly informed of a slightly increas in the yearly price, witch is now set to 34.95$!
Obviously, as many other people around the 'net (as I read), I promptly moved all the domains somewhere else.