If you have relatives in Poland, you now have an opportunity to perhaps learn more about them than their immediate families know. A list of 240,000 names of Polish secret agents, informers, secret service employees, and victims of persecution during the Communist era was leaked on the Internet in the last few days and has become an instant hit. Finding a relative's name there may explain why that person left the country suddenly or perhaps why that person did not leave when the rest of the family emigrated.
"Lista Wildsteina" (Wildstein's list) is now available on many web sites and peer-to-peer file sharing networks and was made into a searchable database. Along with the good news for genealogists, there are worries that the list might contain names of active security agents, still working abroad.
The searchable database is available at http://www.futrega.org/lista. Of course, the entire site is written in Polish.
You can find more information, including the addresses of other sites, on Google.