Hi there, <insert name here>, I'm LuciusMalfoy777. I've been a fan of the book since, well, since an embarrassingly long amount of time. I have read all of the books around 20 times and as such, I can be used as a Harry Potter encyclopedia myself, which is why I decided to spread my knowledge here.
I also have a Pottermore account (I got in on Day 7): AccioUnicorn121. As a male member of the human race, this is quite an embarrassment for me, and I can tell you I only chose it because it was the only username with two things relating to Harry Potter.