Overview

Example of execution:
    python main.py -o a/s/f -r -f asdf.txt

Requires:
* Python 2.6.5+
* BeautifulSoup 3.0 (not 3.1)
* argparse (or Python 2.7+)

Notes:
    Heuristic #1 (because of laziness): Suppose that the size of each archive
    is in kilobytes or in kilobytes. Failure ==> Download the file again.

TODO:
    * Parallelization