You can send self-destructing notes to your friends using Privnote; a service which gives you notes that will self-destruct once the person to whom you have send it reads it.

Here is a small list of free tools available in the internet for securely deleting files.   The secure deletion means re-writing the file which you want to delete several times and then deleting it, so that no recovery software can recover your sensitive data.  The list is arranged as per the popularity and the ease to use.

(a)   Eraser.  This is the best tools in terms of popularity and the ease to use.  This tool removes the files/folders securely by overwriting them many times.  You can opt for Gutman, USDoD and many other patterns for securely deleting your files.  You can drag and drop your files in to the tool.  Moreover, the windows explorer right-click extension is also available to you.  You can also schedule its operation.

There are a number of websites designed to send anonymous mails.  The following are few of them:-

This is purely based on DOS commands.  What happens if you have a CD or folder containing files which are not arranged?  What if they are very large in number?  This simple DOS command will generate the contents of any Directory/Folder and store it in a text document so that you can later view it or edit it.  This is how we do it.

Go to Run and type "cmd" (without quotes) to get the Command prompt.

Go to the Drive/Directory/Folder of whose contents you wish to extract in a txt file.

Adobe Reader is a good software for viewing pdf files.  But most of the time, it requires some time to get started up.  We can significantly reduce the time taken by the software to load.

First browse to the following directory:- (I guess you have installed the software in your C drive.  If you have installed it elsewhere, change the drive letter.)
C:\Program Files\Adobe\Reader xx\reader\  (where xx can be the version number)