A decades-old depletion allowance, for example, allows companies to deduct money as a natural resource is produced and sold.
An illustrative example allows to discuss about a practical implementation.
The Westin Chicago River North, for example, allows guests to create their own mojitos.
PayPal, for example, allows payments via e-mail even from hand-held personal digital assistants.
A United States service, Bid4Spots, for example, allows radio advertisers to buy unsold radio airtime.
The Sidwell Friends School in Washington, for example, allows up to nine applications.
Sprint's "walkie-talkie" service, for example, allows customers to communicate without dialing phone numbers.
One concession, for example, allows management to extend their workday beyond six and a half hours.
Twitter, for example, allows creepshot accounts, in which men secretly take photos of women in public.
Netflix, for example, allows users to contribute ratings for movies that they have seen.
The iLike application, for example, allows people to signal their music preferences to others.
