Following
yesterday’s clue on
Harry Potter and the Goblet of Fire, the fifth round of
Pottermore.com’s Magical Quill Scavenger Hunt has been launched. Centred on the fifth novel,
Harry Potter and the Order of the Phoenix, the brand new question gives fans worldwide the chance of having early access to the beta testing of Pottermore.com.
A screencap of the question for Day Five, August 4, 2011, can be seen below:
For those who have found the question and managed to register, you may discuss the question/answer in this thread but please put your comments in a spoiler tag to avoid spoiling other fans. [*spoiler=Pottermore Magical Quill Day Five]Answer text[*/spoiler] – but remove the asterisks (*).

Please do not post the link of the page that the Magical Quill Challenge directs you to. Also: make sure your adblock is disabled, or you won't be able to see the quill.
Once registered, you may also insert your Pottermore name into your SnitchSeeker profile, if you would like to, by following
this link and completing the field titled "Pottermore Username".
SnitchSeeker will continue to bring you the latest news on Pottermore as soon as it’s available, including any hints on when the clues will be released. Friday’s clue will use elements taken from the Sixth Novel,
Harry Potter and the Half-Blood Prince, so you may want to brush up on your Potion Making skills (it’s a mystery what they’ll ask, but I’m sure Felix Felicis would help!).
Note: If you figured out the clue and answer, and have been able to register and get your verification, you are done with this stage of the Pottermore experience. You will no longer have to register again this week through the Magical Quill challenge; the next part is to await for the Welcome Email for the Pottermore beta site, which will be sent anytime between August 7 to September 30, 2011.
UPDATE: The Fifth Day for registrations is now closed. Please check back tomorrow for the Sixth chance to register to beta test Pottermore.com.
UPDATE 2: The Pottermore Insider has updated their blog, answering a few questions and giving information about the times scheduled for the final two clues.
Quote:
I have a friend who wants to use my Pottermore account. Is it okay to share my password?
Your Pottermore account is for your personal use only. You should never divulge your Pottermore password to anyone because it protects your personal information from potential misuse and identity theft. By creating an account on Pottermore, you confirm that you will treat your login details as confidential. If you would like more information, please see our Terms & Conditions.
I haven't received my verification email yet; has there been a delay in sending these out?
Earlier in the week, there was an issue with Yahoo! Mail and some related services, which meant that some validation emails were taking longer than normal to arrive. This issue has now been resolved. However, we have been unable to deliver validation emails to approximately one in ten of the email addresses supplied to us due to them being mistyped. If you have not received a validation email within 48 hours of submitting your details to Pottermore, you should assume that we have been unable to deliver your validation email to you, and you will need to register again.
Please be very careful when entering your email address; don't forget to double-check it before you click ‘Continue’!
So far, all the clues have appeared in the early hours of the morning in my time zone. Will this continue for the remainder of The Magical Quill challenge?
We know that Harry Potter fans around the world are taking part in the challenge, so we will be varying the times that the clues are revealed. We can tell you that tomorrow’s clue (Day 6) will be released between 1:30pm and 4.00pm BST, and the final clue (Day 7) will be released between 12:30am and 3:00am BST on Saturday 6 August.
To clarify - The Sixth Clue will be released sometime on Friday between 1.30pm and 4pm, BST; 12.30pm - 3pm GMT; 8.30am - 11am EST; 5.30am - 8am PST.
The Final Clue will be released sometime between 12.30am and 3am BST on Saturday; 11.30pm - 2am GMT on FRIDAY; 7.30pm - 10pm EST on FRIDAY; 4.30pm - 7pm PST on FRIDAY.