A scam I don't understand

I'm up to 6 of these e-mails as responses to CL ads in the last 24 hours.  I don't understand how it works?  Are they trying to make a keyword gets hits on the Googles?  I don't get it.

PLEASE don't do what it says, it's clearly bullshit... but I figured I'd share, and hope someone could explain this.

My personal family was having a complicated time due to the slow economy until
It was informed the gov is giving down green notes to Us citizens.

I did have little idea they were proceeding through this so I studied this and found out it was true.

Simply just type out "gov wehp" into google so you can look at more
info on it so you too can help out your spouse and kids just like I did for mine.

Kind Regards, D H

Also Bound to Happen. Tales from CL pt 2

I listed the previous mentioned baseball cards on CL.  After no less than 20 e-mails, a fellow and I hash out a trade.  He doesn't have a car, which is ok, we are all of different means, so I'm happy to accomodate by meeting him at school.  I arrive 5 minutes before the prescribed time, and wait.  He tells me he's waiting on his ride to school.  I get that. 20 minutes later I get a message asking for me to meet him at his place.  Something about warning bells.  I agree to meet a block away at a public place.... even at 6'2" 190lbs I'd assume remain cautious.  Wait for 20 minutes... then I leave.

...ok, he says his kid hid is phone... but really?

CL etiquette.
1. Meet in a public place.
2. Be prompt.
3. This isn't a date.  Ask questions, exchange goods and funds, leave.
4. It wasn't a date, don't contact me unless it's a question about the product.

...and for the older folks, particularly the very sweet woman that bought the laptop, don't pay strangers by check.  They think they are going to get boned, and you should be worried about giving out your most precious of information.  Checks have bank account and routing number, all you need to clean someone out.

Bound to happen. Tales from CL Part 1.

Do I ever love scammers... surprisingly this was the first I had been propositioned by.

Hello
      Thanks for getting back to me,i,m okay with the price and the
condition of thge item and i will like to make an outright purchase of this
particular item but i will want you to be honest with me,because this is my
first time of buying on Craigslist.
      I anticipate that a certified cashier,s check will be sent to you via UPS
as My mode of payment with extra $50.00 to the amount your wiling to sell
the item concerning the pick up, i will be responsible for that,where my
mover will come for the pick up at your location upon your confirmation
of receiving the check and clears your bank.
      I ought to come for the viewing the item but due to my tight
schedule i couldn,t make it.i will implore you to provide the information
below so that the payment will be done as soon as possible:-

1......Full names
2......Full home address
3......City, State & zip code
4......Tel #s.

As soon as this is provided i will let you know when payment is mailed
out and i will update you on when you will receive the payment, and
give you instructions on what to do..I hope we handle this in good
faith...

Thanks while waiting to hear from you.

Naturally this deserves and inkind response.

Dearest Kate,
That sounds wonderful, please send me your bank account and routing number so I can expedite the return of the $50.   Please send payment as soon as possible.
1. Peter T. Barnum
2. 23 Bilkerton Ln
3. Ibadan, Nigeria 90210
4. 818-555-9403

Kindest regards,

Prince Peter T Barnum 

Oh well.