form spam protection

[GSXdan]

What is a good method to use to prevent people submitting forms over and over. What I need is kinda like what the forum uses, where you cant submit something within x seconds after you submitted the last thing.

The site this will be implemented on(www.showoursupport.com), is in ASP(vbscript) and SQL. One method we thought of was to use a session variable and set it to x seconds. But we are already using a session variable for another thing. Can we make another session variable to use for this? If so, how do we go about doing that?

or any other ideas?

thanks

[WhatsThisBoxFor?]

To create a session cookie:

Session("SessionCookiesName") = "Value"

You might want to change its name to something like LastSubmitted. Make sure your other session variable is given a unique name, overwise they will overwrite each other. You can then set the value to the time or something.