Winning the lottery is purely based on luck and God by your side, analyzing previous winning data is merely a way to just pass time, that is make time run faster.
Well, I guess they'll do voodoo as well to make certain numbers jump. Mathematical analysts in Europe know that mathematical events are idependent, and so the fact that certain numbers have come up in the past does not make it more or less unlikely that they will come up this time. To give a simple example, heads 10 times does not make tails more likely the next time, however counter-intuitive that may seem.
So, yes, analysing previous numbers is not for predicting future numbers, but more of a hobby.
I've always seen people who do this things as jobless, many of them will sit in the lotto shop from morning till night, doing nothing other than holding that big paper to their face all day.
And the most deceptive part is that, anytime, probably a number they predicted shows up in the winning numbers, they are over joyed, over confident that they know what they are doing, where as, it is just fate that brought that number in amongst the winning numbers.