Used stamps exchanges.

I already sent 4 letters and all them were recived, however till now I haven't received any letter.
Did these happend to you in the beginning or its commun taking so many days?

May be, instead of (for samlpe): "Stamps sent: 40 Stamps received: 33 Stamps traveling: 4", it is more correct to write: "Stamps sent: 4000 Stamps received: 3300 Stamps traveling: 400"? That is to specify not number of sendings ("lots"), but quantity of stamps by default!

T :)hank you for your messages, but having this situation is a little worry for me...

Stamps sent: 4
Stamps received: 1
Stamps traveling: 4

I still have to receive 7 letters... :)

no panic...
my letter is on its way to you :)

After an exchange is registered, the sender gets in line to receive stamps as well.

3 of the 4 letters you have sent have been registered yesterday.
From this 3 letters registered yesterday, you would most probably get some stamps next week (depending on the country and the actual shipping day).

And from the first letter you have sent, you already have stamps traveling to you. It's possible that you will receive something by the end of this week.