Hello BHW,
I just requested one of the 1k review copies, and I thought I'd post my review.
Binilmuthu replied promptly and hit me with a file of 1k Yahoo Accounts. A random sample proved that they were working. I tried more than a handful and they all worked.
The username and password structure shows that these are definitely mass created, certain features and passwords cycle every X screen names. That doesn't really matter, but it was worth noting, because you'll notice it if you get a list from him.
All in all his service is as advertised, and he's darn fast. These accounts were fresh, and working. I'd definitely use him again, and I'll be favoriting this thread so I can find it easily in the future!