Typically this will be followed by a request for another small amount of money shortly after the victim sends their initial amount.
In this scam the scammer will say that he/she wants to visit you but doesn't have enough money to pay for his/her plane ticket and travel expenses.
They will then suggest that you send them the money so they can purchase a plane ticket.
Shortly later they will tell you they need additional money for a passport, visa fees, transportation to the airport and miscellaneous expenses.
Typically this involves asking a victim to send a small amount of money to buy food, pay for daily living expenses, internet access, hiring a private room with a webcam or numerous other variations on the above.