As no code here, so I only raise idea according to my experience =)
The possible output for a guest book are :
1. Thank you page
2. The same page as the guest book (but resulting on the process
of POST)
3. Redirect to the page same as the guest book(By GET method)
If case no. 1 , you may add ano
What is happening is that the variables are still stored in the page he is
displaying when the program handles the parameters that are sent via the GET
or POST method. When the user refreshes the screen they send the parameters
all over again. Probably the simplest way to circumvent this and still
