Yahoo! Messenger 11 Help

I will constantly update and add new things here so always check back!

Add Mobile Device - How to add your mobile number to messenger and become mobile.
Add New Contacts/Friends
Ad Blocker/Remover - Remove those nasty advertisements/banners.
Audibles Not Working - How to fix them.
Avatars/Pictures - How to Add/Change Avatars/Pictures.
Cant Delete Friends/Contacts - What to do if people u deleted are still on your friends list.
Download And Install
Disable Audibles - How to disable the audibles in instant messages.
Disable Yahoo Insider - How to disable the Yahoo! Insider popup window.
Edit Your Profile
Enter Room On Alias - Enter a room using a alias name.
Follow User
Join a Chat Room
Link to Facebook - How to login to Facebook and chat with Facebook friends log etc.
Message Archive/Conversation history - How to view/enable them.
Old Versions - Download and install older version of Yahoo! Messenger.
Password was Stolen - What to do if your password has been stolen.
Remove Your ID from someone else's List - How to remove your Yahoo! ID from Someone else's Friends list.
Smiley List - List of all of Yahoo! Messenger 11 Smiley and codes.
Stop Real Name From Showing - Stop your real name from showing in instant messages.
Text Not Visible in Messenger - Your text not showing up in Instant Messages?