Can free accounts trade goods, sell in the MB, or join FCs?

If not hiw could these bots even be used by RMT companies?

Historically RMT companies have preferred to hack accounts and sell the goods to get their “product” because that can be traded and sold and a lot of people have very insecure accounts...
(An example was the launch of Guild Wars 2. A few days into launch 15,000 or 30,000 accounts got banned. I forget which number as it’s been a while. The reason was they got hacked. A third party fan forum had it’s database stolen and kept the news secret until ArenaNet noticed a pattern and went asking around... turns out roughly 30,000 used the same login credentials on a random bulletin board as they did on their game accounts. They were lucky... they got banned before most of them were used. Many accounts are hacked like this months or years before the hackers step in and loot them... They just sit on a list if accounts and use them slowly over time.