Probably he did not find anything more relevant topic than this. I think it should be in Ethical Hacking to some extent and so moving the thread there.
Keyloggesr are programs that when installed on a Pc,it will secretly record every single keystroke.On this day there are more advance one,able to almost work as a trojan,not only keystrokes,but gets screenshots.You can review the logs,choosing to gett them by emails or ftp. Some of them have a "remote installation" feature,wich allows you to infect a remote pc by sending a binded file. My 2 cents
yah, some of them are invisible and can only be run through the "run" command on the start menu, they also record programs and files that u've opened some of them even send u the log to ur email