Traditionally, many style guides define components as atomic components, which are then used to build more complex molecules. In theory, this works well to create coherent and flexible systems. In practice, however, what often happens is that these re-usable atoms are used many different ways, allowing all kinds of molecules to be created. Again, this opens the door for all kinds of disjointed experiences and makes the system harder to maintain.
In January 2013, American launched a new rebranding and marketing campaign dubbed, "The New American". In addition to a new logo, American Airlines introduced a new livery for its fleet. The airline calls the new livery and branding "a clean and modern update". The current design features an abstract American flag on the tail, along with a silver-painted fuselage, as a throw-back to the old livery. The new design was painted by Leading Edge Aviation Services in California. Doug Parker, the incoming CEO indicated that the new livery could be short-lived, stating that "maybe we need to do something slightly different than that ... The only reason this is an issue now is because they just did it right in the middle, which kind of makes it confusing, so that gives us an opportunity, actually, to decide if we are going to do something different because we have so many airplanes to paint".
Airbnb uses drip pricing; when customers search for lodging, Airbnb displays per-night prices that exclude its service fees and the total charges are not revealed until the customer selects an individual property. After a crackdown by the Australian Competition and Consumer Commission in October 2015, users of Airbnb's Australian web site now see the total price of a stay including all unavoidable charges at every stage of the booking process.
Some cities have restrictions on subletting for a short period of time. Airbnb has published a list of regulations and requirements for cities in the United States. In some cities, collection of a transient occupancy tax by Airbnb is required. In many cities, hosts must register with the government and obtain a permit or license. Landlords or community associations may have restrictions on short-term sublets.