Are there many crypto-Jews in Poland?

That's bullshit. Michnik has risked his own career to defend Poland's good name against false accusations of Anti-Semitism. To take just one of many examples, here he telling the self-righteous, finger-pointing, 'all Poles are antisemites' French Left what idiots they are on the subject of Katyn

What did he risk , what cereer ( given by fellow Jews ). What a moronic opinion .

Michnik runs very anti-Polish and full of nonsense newspaper .

There are few people in Poland who don`t know this fact.

And still GW sells very well indeed.

Although I'd like to say that it's because we actually help people here but sadly that doesn't have any effect one way or the other.
The reason that we are still here would probably have something to do with knowing the rules and keeping to them. You should probably read them again yourself, pay particular attention to rule number 2 and rule number 8: your post shows no knowledge of either rule.

Well, Jewish identity is unusual in that it can be either (i) ethnic or (ii) religious or (iii) both.

One can also be Vietnamese and Polish at the same time, or Muslim and Polish at the same time - by law. Because contrary to racist anti-Polish stereotypes, Poland is a standard western liberal democracy.

Roca's theory was that one is either a Pole or a Jew, and that Jews in Poland are 'pretending' to be Polish while they devote their entire lives to their conspiracy to cause the inefficiencies Polish bureaucracy. I'm not sure why Roca chose the bureaucracy, given he hasn't provided any evidence he could have picked any other of Poland's failings to blame on a Jewish conspiracy.

Why is everyone here so obsessed with talking about Jews?

First of all, seriously? Why is everyone here so obsessed with talking about Jews? Do you all really have nothing better to do?

are jews descendants of gypsys?

Sarah, I don't know how much you know about history, but most of the people here ranting about Jews are the ones who are descended from peasants in the Eastern borderlands. Much of what they say has been passed down to them by said peasants - so :)

What do you mean by the Eastern borderlands?

I've been living in Mazury and Warsaw and have never met any people like this.

The Kresy. What is now Belarus and Ukraine. Mainly the places where Poles made up fewer than one in five of the population in 1931.

A fascinating place and one with a rich heritage of different communities living together.

which is now mostly lost unfortunately

Sadly. A lovely place - still interesting.