Its generally not a wise idea to ask on a forum another forum to sell on.. So i just suggested that section. Most people know to use google or PM someone.
If you want to make the most money that you think your account is worth, right here on sythe is your best bet. How the account sites work, they will buy your account for a mere fraction of what the account is actually worth, and then turn around and sell it for double, sometimes even triple of what they gave you. Also if you are looking to sell here on sythe, use our Price check sticky, not there calculators, because once again, they low-ball you
Usually a good idea but not in this case, far too many scam sites sites about.
I heard ebay is still a good place to sell accounts as long as you disguise the name and description as not to go against their ToS. You could also try Craigslist in the same way.