The user "Holmes" should have a lot to say in this thread :P
btw I gave up on Pottermore after a week or so after I realised how addicted I could get :(
Yes, I do have far too much to say on this topic. As my signature hopefully says, I'm in Ravenclaw. It's kinda strange to me when people's main exposure to Harry Potter is only through the books by JK Rowling (where else would it be from?, I hear you ask), and you just want to be a brave, courageous and loyal lion, but you wouldn't mind being sorted into Ravenclaw because you're obviously smart, and at a stretch maybe Hufflepuff (though I don't know why), but please NOT SLYTHERIN, NOT SLYTHERIN.
But after having read a couple of million words + of HP fanfiction on fanfic.net, you will understand that there is far more to Harry Potter than the books by Jo. I've read the equivalent of three times the HP series of books in fanfic (~ 3 million words so far). I think that fanfic.net is an integral part of Harry Potter culture, where you get some highly talented people from the public putting in their time to make brilliant works of writing from which they make no money, even though some of their writing is so good that without any copyright on Harry Potter the writers would probably make a pile of money from their stories. One of the most reviewed books on fanfic.net is one that is 500,000 words + and still going, and is highly addicting, and I've included a link to a highly comedic and brilliant chapter 5 from Harry Potter and the Methods of Rationality (be warned, you may find yourself living on coffee for a few days as you struggle to finish this fanfic, forsaking all sleep and hygiene) , so i've hidden the link as a spoiler:Spoiler
http://www.fanfiction.net/s/5782108/5/Harry-Potter-and-the-Methods-of-Rationality
So, I obviously am so embroiled in the world of Harry Potter that I just went on a complete tangent to what this post was actually about, so I'll try to establish a tenuous link. *As I completely intended to eventually say*, after reading so much fanfic your perception kinda changes of the house system. It all becomes like school houses; they're not sorted based on personality traits (ah, how I wish that we could have as strong a house rivalry at our school as between Gryfindor and Slytherin, the houses are kinda randomised or based on sporting talents pre-yr 9 which kinda change during your life at school, so we become a randomly assigned clan who all love eachother on Athletics Carnival or Chorales day). Especially for most of people who use pottermore, that's to say, most of the muggles who use it, the house segregation on pottermore is no where near as influencing on your life as in the books themselves, but in defence of this statement, I shall say that when Ravenclaw fails to win the house cup on pottermore, it's because the muggles were too busy studying in real life to earn points in the virtual world of Harry Potter.
But yeah, moving on to pottermore, it's really really amazing, I was and still am captivated by it. Have you users come across the official pottermore insider blog (http://insider.pottermore.com/)?, they post updates and it's pretty exciting most of the time. [pre-PS: Pi, I encourage you to visit pottermore again! I think it'll be an even more amazing site within a few years as it technologically develops]. Also, the art that users submit on pottermore is amazing, I actually had no idea of the brilliantly talented artists out there until the insider blog started posting artwork, and alongside my contact with atarnotes, I began to get a sense of the sheer amount of talent in the world. It actually made me realise that everyone is talented, and amazing, and you just don't always realise it until you do.
And that's only some of what Harry Potter means to me.