Receiving junks when using chat messenger

When we are online to use Instance messenger (MSN, Yahoo Messenger, Google Talk) , many times we may receive some junk messages from our friends. For example of the MSN message contents :

(1) Do you want to check out these awesome pics from this party LOL and the cool new network site http://yourname.90210-party-pics.com

(2) OMG u gotta see this! Go here: http://yourname.obama-offers.com

(3) check out these awesome pics from the awesome party LOL http://yourname.college-party-pics.com

And once you click the link in the message, and it may bring you to a website and prompting you to enter your MSN user name and password. However, this is a fake or unknown website (see the sample in the photo) they are going to steal your MSN ID and password, by storing your MSN logon information and mis-used your identity to spread again the similar MSN message to your friends - they do bad things, whenever you are offline.

SOLUTION:
How to stop those message from your friend ?

Just need to inform your friend to change his/her MSN or Hotmail password at Windows Live Messenger website at https://login.live.com/
(Note: Windows Live Messenger is formerly named MSN Messenger)

If you are informed by your friend about receive the similar junk MSN sent by you, and what should you do ? Same things, you just need to change your MSN or hotmail password.

You can use the new password which is almost similar to your old password, so that you have a easy remember password - instead of changing to a completely new password.
For Example: Old password = Home2000 and your new password = MyHome2000 or Home.2000 or Home-2000 or (Home2000) or 1Home2000

Do not enter your MSN user name & password for any unknown websites.
Never key-in your user name/ID & password on any website for a link which is sent by your MSN friends. Unless u really know the website can be trusted. (you may consider to install WOT browser plugin, in which it can help you to identify a website is safe or not)

If MSN password has been changed but still having the same problem issue, then the user computer could have been infected with trojan/virus/spyware. Some trojan/spyware/virus capable to steal your save password (eg. when tou choose to Remember MSN password).
Also some bad reputation software, for example, "SweetIM" has been commonly use because it has many smileys, emoticons, winks, games..etc for MSN, AIM & Yahoo Messenger, but it has embeded adware/spyware.
Please install and update with a good antivirus/antispyware software.
Please remember your new password.

Further reading to my new post (below link) for more information about the reasons and how to create easy remember passwords. http://tech.wk2u.com/2009/03/090305a.html