Ovi contacts to me sounds like an ldap style address book rather than an IM client. I excitedly thought that I would be able to store my contacts on a cached handset version which I could update across devices without using a computer or phone switch. Calling it something like ovi-chat or ovi-im or something like that would be a lot more intuitive.
Not a big issue, but I'm sure I'm not the first person that's been confused by the name.