3) you cannot make multiple accounts
You may use as many multiple accounts as you like as long as one of them is not banned, specific prohibitions you meant are usually if you join the same campaign.Quote
2) You cannot buy Merit either from someone's and that's cheating.
There are certain activities that actually don't break the rules but are hated by the community, such as sending merits to the alt account and then sending them back to the main account.One case example:
https://bitcointalk.org/index.php?action=merit;u=3469024 main account
https://bitcointalk.org/index.php?action=merit;u=3436525 alt account 1
https://bitcointalk.org/index.php?action=merit;u=3524483 alt account 2
You see? it's a recognized pattern easily
