Hello!
I agree with
Lucille that this is a very good site, but being Russian I've found some inaccuracy which I have already reported about. I have no idea if my corrections have been noticed, but nevertheless it's a great site. I don't know about the pronunciation of Russian names, as it's realy hard to pronounce Russian names written in latin. For example, Katenka, btw this name is written with "E" instead of "I", if you write this name in Cyrillic you have to put the soft sign after 'n' (between 'n' and 'k') to make it soft - Êàòåíüêà.
The author of the site did the great job, as he collected the majority of Russian names and pet forms but not all of them (maybe even I don't know all of them :)). But if he agrees, I can give some more names or pet forms of the names, not only Russian but also Croatian (but I can't still hear the difference between Serbian and Croatian names :(()
Sincerely,
Katerina