Mobile phone companies and other would-be users of wireless spectrum have long lusted after television's empty airwaves.
But Apple may face an uphill battle in persuading would-be users that their systems would be sufficiently secure.
The vast digital archive, which was established by Steven Spielberg in 1994, is virtually an impenetrable thicket to would-be users like historians, educators and documentary filmmakers.
Until June, would-be users must register on Tellme.com's Web site before they use the system to avoid overloading it during its rollout, Mr. McCue said.
Four-stroke engines are cleaner, and although they cost more to buy (putting off many would-be users), they cost no more in the long run because they are cheaper to maintain and need less fuel.
Would-be users had trouble accessing it initially, and critics complained about Jumo's plan to retain a payment of 15 percent of every donation made through its site unless users directed otherwise.
The only problem for hotjobs.com was that their ads generated too much traffic - some would-be users had to wait five days to access the site and post their CVs.
Google on Wednesday closed applications to its "Explorers" scheme for would-be users of Glass – though not before one who claimed to be on the project had tried to auction off their pair of the $1,500 spectacles on eBay.
Since the launch of the site on 1 October, would-be users have complained of stalled pages, dead ends, error messages, dropped accounts, eternal loading, misinformation, lightning strikes, arrhythmia and gout.
In some places, this "white space" of unused frequencies separating working channels amounted to as much as 70% of the total bandwidth available for television broadcasting.Mobile-phone operators and other would-be users of wireless spectrum have long lusted after television's empty airwaves.
Yanking away services beloved by early adopters almost guarantees that critical masses can't be obtained: not, at any rate, without the provision of an incentive or commitment mechanism to protect the would-be users from the risk of losing a vital service.There may be bigger implications still, however.
