Phirst iPost!

Abraham Lincoln said: "If I had six hours to chop down a tree, I'd spend the first four hours sharpening the axe".
The same applies for building an app.
One approach:
Draw a schematic of data flow.
Start thinking about data structures for your app.
Write test cases for imaginary modules that talk to these data structures.
Code the modules utilizing the above test cases.
Write app code that utilized the modules.

You don't even need read cookies to exploit
this feature.
This technique is probably used in stock fraud
pump-and-dump schemes. Google Finance has a
trend display that shows the most "popular"
stock base on the the Gooogle Trend technology.
Fraudsters probably popularize stocks they've
purchased by seeding web sites with images that
search Google for the company name of the stock.
As more folks search the company, the stock
becomes more popular. As it get popular it gets
more eyeball looking at it and investing in it
who ever invested in a stock they didn't
hear off?). The stock goes up. The fraudsters
dump the stock.