Thanks for the answers. And I'm aware that it's not a super accurate tool. I wouldn't call it unreliable though, I see it as more of a general idea. If you read about the different types it's not that difficult to place yourself under the one that fits you best. To get a more accurate (not 100%) reading there is also the genius test. Most people find that one to be more accurate. I just happened to be an ISFP under the MB test and and ISFP under the genius test as well.