Speedy as a category should be reconsidered

Hi,

In my expierence the solutions posted under "speedy" are rarely faster executed then the solutions posted under "clear". Do I misunderstand what the speedy category is for or do people simply not check how speedy their code is? I do think execution speed of code is an interesting aspect of the solutions so would it not be possible for checkio.org to test the execution speed automatically and rank peoples solutions based on those tests?