The popular multi-chat application Trillian debuted its first iPhone application a native application for your iPhone and iPod Touch. The IM experience will be enhanced with the advancements of iPhone OS 3.0's push notifications.
This chat client supports many chat networks like Yahoo Messenger, Windows Live Messenger, MySpaceIM, AIM, Google Chat, ICQ, Jabber, Skype, and just recently they also hooks into added Social Networking like Faebook and Twitter as well as your POP3 and IMAP-supported email accounts.

The all new iPhone app comes with bundle of features like grouped contacts, bubble chat view, set your status message with multiple identities, Instant synchronization across multiple clients and Push notifications plus. You can instantly send pictures from your photo album or directly from your camera to your friends.
Users can chat with friends and coworkers via the native desktop app or a browser-based IM from Trillian.im, and from now on, with a mobile IM client too. You will begin to see strong ties between Trillian’s desktop and web editions. In short it will provide you all-in-one support for your needs like chat, social networking and email and file sharing. According to CNET, more then 38 million desktop copies have been downloaded.
Trillian for iPhone is now available for purchase on the App Store, priced at $4.99. This price is also applicable for existing Trillian Pro users too.
As you know, if you use Gmail chat you'll see status indicator with green, orange, and red bubbles which indicates if your friends are online, offline or busy.
Now Gmail adds up a new feature with it. From now on, it will also show you Green Robot. It's a new experiment in Gmail Labs, and you'll see a robot icon next to people who are currently using Android phones.

So seeing a green robot means your friend available for chat via Android, Seeing a orange robot means your friend is online via Android but currently away. and if you see a red robot, that's not an angry robot, it's just your friend is online with Android but currently busy. So now you know who is online from their Android devices on Gmail chat.
When your chat buddies log into regular Gmail, their presence icons will revert to the traditional red, green, and orange status bubbles.
These icons can help you decide whether to tailor your conversation to the type of device that your chat buddy is using. For example, when you know the guy on the other end is using his Android phone, you may decide to send shorter, more concise chat messages.
This new feature is limited to Android devices only so if your friend is using chat via BlackBerry, iPhone, Pre or any other mobile devices then it will not show the robot icon but will show the regular glowing bubbles. Addition to that if your chat buddy logged into both Regular Gmail chat and Android chat then also the regular glowing bubbles will be shown.
To get started just logon to your Gmail go to Settings > Labs > and browse or search for green robot!
Starting today, for all
Meebo users with a Meebo account you’ll get personal links, something like Twitter Profile links. Meebo call it the Buddylink. It will look like http://meebo.com/add/
yournamehere
Now you can share your personal Buddylink in email, Facebook, MySpace, Twitter, Blogs, Website, bumper sticker & T Shirts. with one click you’ll be able to join each other’s buddy lists and start chatting instantly. Of course, you still have total control over who can see you online and who’s on your buddy list. By this its very easy to chat with others so now it's an easy way to get more people you care about just a click away. It's personal link for instant chat.

Buddylink Page will Look like this to your Guest
The downside is, To use Meebo your friend or the person who wanna chat with you, Should have a Meebo Account. I don't know why meebo don't put up Single sign on like OpenID because it already support mostly all IM services like Yahoo, Google Talk, Facebook Chat, ICQ etc