For a company like GoodGuide, who make their money not by selling a hard product (with investment costs etc) but by selling product placement and business intelligence, what are their variable costs?

I understand what variable costs are for a pizza shop, where the costs vary based on the number of pizzas made and sold. More product = higher costs.

But in general, how do you talk about variable costs for a company that provides information?


Question: Killing child thread from parent thread in java
Answer: Just call interrupt on tChild object and it will interrupt your child thread

Thread tChild;
tChild = new Thread(new childThread(), "Child Thread");
tChild.start();
//...
tChild.interrupt();