It really depends...
Some communities have started using solar power to mine bitcoin and now they get money off that.
Some communities use Bitcoin as a coin and they can make payments without the need for banks.
Some came to bitcointalk to read/learn/understand what's bitcoin about and maybe invested some money into.
However, people can come to bitcointalk and get caught into hyip scams, compulsive gambling or even altcoins (the list of examples is actually much longer) and lose money.
So, as I said, it depends...