Do you use aol's instant messenger or any other computer based instant messenger? If so then you've probaly noticed that you can only access it on your computer. But what if your on the go and need to use your instant messenger on other computers? This is where meebo comes in.
"meebo.com is a website for instant messaging from absolutely anywhere. Whether you’re at home, on campus, at work, or traveling foreign lands, hop over to meebo.com on any computer to access all of your buddies (on AIM, Yahoo!, MSN, Google Talk, ICQ and Jabber) and chat with them, no downloads or installs required, for free!"You can also create an account to combine all your contacts from different accounts and save your chat history and preferences. I tend to use this service more often than aim or any other, just because of its simplicity. And yes, your password are completely secure, meebo uses 1024-bit RSA keys to safe you.
Theres also this super cool map that tell where everyone is IMing from, be sure to check that out.
link to meebo