My N810 runs OS2008 still. Today during normal telephone call with friend I was asked about Skype account. After call I grabbed tablet and looked at available applications.
Few minutes later I was logged into Skype account. But to get notifications application has to work… Same problem also exists with Gizmo… Both are available by default (as links to installation) in OS2008 but not integrated into system at all…
I wonder why that situation exists — user can add Google Talk, normal Jabber accounts and SIP ones and those are handled by Maemo Contacts application. Why Nokia did not made such integration possible for external IM/telephony applications…
Probably same reason as with i18n: lack of thinking on design phase…