Not to argue semantics here but... by definition and island is - according to Webster's - "a tract of land surrounded by water and smaller than a continent".

So, being that I am the person that Hazelnut referred to in a pervious post that has a place on Black Cat Island, it is in fact an island - bridge or not. HOWEVER - as mentioned, my wife and I do not refer to ourselves as "islanders", and rightfully so - as that is an entirely different situation and lifestyle as we know it. I look at having to drive your vehicle to a mainland location, and needing to use your boat as your primary mode of transport to and from your house, they key to what defines you as an "islander". Not to take anything away from mainland folk, but it takes a heartier soul to be an "islander" vs. a "mainlander" IMO. I think that any islander could transfer to being a mainlander without any trouble - logistically speaking that is. But I know for a fact that not every mainlander could become and islander with the same ease and comfort level. And as I am speaking from personal experience as I have spent many a-days, and nights and weekends living the "islander" lifestyle. Trekking back and fourth by boat to a "real" island in rain, snow, breaking through ice etc... and as much as I love it, it is not for everyone. I love the peace and serenity and almost "survivor-like" mentality that comes with islander living. But at the same time - it's nice to be able to walk out your door, hop in your car and head to the Village Kitchen for breakfast at the drop of a hat!
So, there are those that live on an island and those that live on an island AND are "islanders". Either way you look at it, we are all fortunate enough to be able to spend our time on what I would consider one of the greatest places on earth!!! And I challenge anyone to argue that fact!