（多选）以下哪些表述是正确的：（仅按照顺序填写正确的答案字母，如：ABDE）
A. 用户可以任意传播有收益的邀请链接
B. 在社区内进行任何形式的商业宣传属于红线违规
C. 求助须在「看完再问：新手答疑」频道进行
D. 在 SFW 特定频道发布色情内容属于违规行为
E. 已证明是永封者的小号的用户仅会被警告
Мысль
Finalizing answer format
Alright, looks like C is unsupported by explicit evidence, and the user wants just the letter answer. However, I still need to be careful and follow the guidelines, which suggest citing sources. While I want to give the answer in the requested letter-only format (BCD), including citations would break that format. It’s tricky—earlier, sources were included subtly in a Chat01 conversation, but I won’t take that risk. So, I’ll stick to the required BCD answer.
