In string theory, one of the many vibrational states of the string corresponds to the graviton, a quantum mechanical particle that carries gravitational force. Thus string theory is a theory of quantum gravity.
Their average web application development cost is around $500K and their staff or contractors' salary is in the six figure plus range. Their proposals are usually based on a lot of fluff with the development rate ranging from $400 - $800 per hour. These types of companies focus on custom development.
For example, web programmers got a median rate of $35 an hour as employees. As freelancers, they earned an average of $55 per hour. Other freelance hourly medians included $60 for web developers or rich media developers, and $75 for mobile app developers.