I wanted to sell my acc and created topic
https://bitcointalk.org/index.php?topic=2186079Then my acc was tagged by yahoo62278, why so? is it forbidden to sell accounts On this forum?
Ok, now if I'm not going to sell the account and I will delete the topic of selling, then my trust will be returned to the initial position?
AFAIK, selling your account is not forbidden... This means the mod's will not ban you if you try to sell your account.
Trust, however, is unmoderated and has little or nothing to do with the forum rules. Yahoo62278 indicates he does not trust you because you're selling your account, and that's OK. It's perfectly valid for him not to trust you if you're selling your account.
It happens quite often that a sold account is used to scam people, or to send spam, so a lot of people will give you negative trust if you get involved with the account trade.
As for your last question: the only one that can remove the red trust is yahoo62278. Try contacting him, explain your situation and ask him if he's willing to remove his trust if you delete your sale topic... Maybe he'll help you out, maybe he won't... That's completely up to him.