From the FAQ at the top of the page.

Welcome to the 2.4.3 PTR (Please Read)

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Q u o t e:

• Q. Why was my post deleted?
A. As said before this forum is more strictly moderated than other World of Warcraft forums there are a variety of reasons your post may have been deleted:
Duplicate posts
Non-constructive or combative posts
Off-Topic Posts
Inappropriate language
POSTING IN ALL CAPS
Questions already covered in any of the stickies

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This covers any questions you have about pre-mades because all the information we have about them is provided in the stickies.

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Hortus
Blizzard QA
"Random does not mean fair, and past results do not influence future occurrences." - Corbenn