[villedepommes]

My two cents, I skimmed through a few texts and I can understand 60-70% of what I've read. I'm a native Russian speaker, btw. However, I'd say I'd be skeptical about this whole idea, since I'd still need to invest considerable effort to learn the rest. Instead, I'd rather learn English, even though it's even more effort, still, a cost-benefit ratio seems to be much better in my particular case, as English will pretty much let me communicate with 1.5B people, which probably includes most Poles anyway.