Hello.
I will be glad to do it, but i have to ask one thing: do you want your software promoted on English sites or on Ukrainian sites? If you want your software promoted on sites created using English language, that is ok, because i am fluent in English. Russian and Ukrainian on the other hand could be a little bit tricky.
And there is also the problem of the amount of postings you would like to see realized. Are we talking about tens, hundreds, thousands?