Don't know about that[1] but Skype founders were Swedish & Danish and Estonia is close by.
[1] "consist of Denmark, Finland, Iceland, Norway and Sweden" https://en.wikipedia.org/wiki/Nordic_countries
[1] "consist of Denmark, Finland, Iceland, Norway and Sweden" https://en.wikipedia.org/wiki/Nordic_countries
Hence my reply to "Does Estonia count as a Nordic state" question :)
Finland was a part of Sweden from ~1200 to 1809. Finland also still has a large Swedish minority and has Swedish as an official language. The biggest religion is Lutheran due to Swedes forcing it on people when they conquered the land. Estonia is more Orthodox.
More importantly, Finland has been co-operating with the other Nordic nations politically and economically for the ~century that it has been independent. Remember that the Nordic nations aren't just a cultural region, but they also share political, social and legal systems, have a passport union (although that overlaps with the EU nowadays) and, while they have not been able to develop any official military alliance due to Russian and American pressure, they co-operate a lot.
All in all, Estonia has some things in common with Finland, but it doesn't have much claim to being a "Nordic nation". They might be in the future, but not today.