Originally Posted by mtbvfr
Can anyone recommend any free ASP/ASP.Net GuestBook applications that have good Spam protection features.
Are you trying to prevent SPAM bots from posting randomly in your guest book? Or are you trying to avoid humans trying to post?
If its the former,you can implment what most sites have started doing: Making the user type the contents of a graphic before allowing the post.
It would be simple to write this in .NET (as I have done for a number of projects), or, I'm sure a quick google search would produce a number of 3rd party controls that do this for you.