I am happy to report that there has been an exciting and growing interest in Slovioski among the members of Slavic-Unity (more than I ever expected). Members are actually beginning to write in Slovioski!
This is most promising. These are the younger Slavic speakers, who generally have shunned communicating in any Slavic language in favor of English.
Yes, yes - English is still primary communication, but more and more, Slovioski is appearing on their posts.