Launch Skype 2.0 on Ubuntu by using pipelogin

Skype 2.0 supports pipelogin, that you can login with a simple command
echo username password | skype --pipelogin

Our goal is to know how much time it takes to launch many Skypes(say 30 for example)
In order to do so , write a script.
1.Open a new file
sudo gedit LaunchSkype

2.write script to automatically launch 30 skypes
#!/bin/sh
echo username1 password1 | skype --pipelogin &
echo username2 password2 | skype --pipelogin &
echo username3 password3 | skype --pipelogin &
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echo username28 password28 | skype --pipelogin &
echo username29 password29 | skype --pipelogin &
echo username30 password30 | skype --pipelogin &

3. Save the file

4. Change mode to let it executable
sudo chmod 777 LaunchSkype

5. Execute it
sudo ./LaunchSkype

I test it on Ubuntu 8.04, it take less than one minute to login 30 Skypes