Opera just posted their most recent stats about the users of the Opera Mini browser and the sites they visit. Strong growth worldwide is the name of the game and we couldn’t be happier! However, one thing is interesting - Motorola RAZR is not in Top 10 devices in the US. Instead it’s dominated by Nokia and Blackberry devices. The reason this stands out is the fact that AdMob Mobile Metrics put Motorola devices into the top position in terms of mobile ad impressions served in the US (at 25.2%, no less!). Both Opera and AdMob reports are dated November 2008.

Opera Mini is the best browsing experience possible on the lower end Motorola devices. It seems that in the US, there is a significant divide between the “pro” users of mobile Web services and those who just click the links delivered by a WAP push. AdMob serves the latter category, while Opera Mini caters to the expert audience. Also, it’s possible that the omnipresent RAZR comes crippled in terms of its ability to install third-party applications like the Opera Mini (can anyone comment?). It’ll be interesting to see the two categories merge as smartphone features migrate down to the mass market.