Vrba
This program is usable in places like internet-cafe. It is able to store messages written by users. These messages can't be removed (at least it's not easy - if you don't think about erasing the whole data file :-)...You can use this program for any (other) purpose freely...
Oh, the program looks like this (sorry for not translating the strings, but this program was written really fast and I'm not going to develop it anymore...):
Download: vrba.zip