[nitinthewiz]

I feel it's a legit idea. Some of us are really interested in new services. Most importantly, a service should not judge it's success by the number of sign ups (like G+ does) but on the number of interactions/service calls that it's users do over a period of time (twitter way of accounting itself).

[Kelliot]

If accounts added in this manor where removed after a set period of time due to inactivity i can see it being feasible.

It would be a good way to offer the service in bulk and then reduce the numbers down to just the users who will truly help grow the service by using it.