<human>: Could you distill the essence of the text into 1-3 sentences?

I'll go first:

I'm currently looking to sublet an apartment for the summer and since I started I've had several e-mails from people claiming to be from a different country who need a place to stay as soon as possible. These e-mails tend to have really poor spelling and grammar errors. Many phrases don't make much sense. Without asking for any pictures or details of the apartment, most of them eagerly agree to commit themselves and some even strangely guarantee that they are trustworthy. One in particular told me that their company would send me a check for the first month's rent, but that there would be an excess amount of money. They told me that, after receiving the money, I  should send the excess amount back to their travel agent to pay for their trip to my country.
<bot>: People who claim to want to sublet my apartment are asking me to deposit their checks and send them back 'excess' money.