Quote Originally Posted by translations.nm.ru

I concur. I never heard anyone in Russia use Olya as a diminutive for Oleg, and most Olegs I know would take it as an insult..
Excuse me but if you've never heard anyone in Russia use it as diminutive that doesn't necessarily mean that it's not used at all. I agree that most Olegs would take it as an insult if addressed by male but if some Oleg's g/f called him "Olya" he wouldn't be offended, IMO
Quote Originally Posted by translations.nm.ru
And this Canadian site can hardly be reragded as an authority on Russian language. Even if some Canadian doukhobor actually used this form in some document, it doesn't mean that it is actually used in Russian language.
You are absolutely right. Canadian sources won't do. Let's better apply for information to shcolar's Petrovski dictionary:
http://slovari.gramota.ru/portal_sl.html?petr_imsm.htm