Slovio is wacky but the other one linked here, Interslavic, is pretty good. It's easy to understand from my north slav perspective and others here seem to be reporting the same. I thought the differences between languages were too great for a language this effective to be constructed, I certainly can't understand Croatian or Russian, for one. So I'm impressed, and I like the idea.
Agreed. As a South Slavic native speaker I could understand Interslavic about 80% directly, and 20% from context, but what's more surprising to me is to see that speakers of North, East and West Slavic languages in the comments are reporting similar numbers!
