You remember the beta announcement about Yahoo! Messenger offering PSTN IN & PSTN Out, right? Well, it's no longer beta - it officially announced today. You may also recall the recent announcement that Yahoo interoperates with Micrsoft MSN Messenger, so Yahoo certainly seems to be quickly adding features and functionality.

One of the coolest features is the plugins capability Since opening up the plug-in platform on June 20, third party and Yahoo! developers have developed 180 plug-ins worldwide. 

The Yahoo! Real Time Communications team thought it would be interesting to share the top 5 Y! plug-ins that have shuffled to the surface… If you go to the “most popular” tab you will now iTunes has surpassed Eazibo with downloads.

Here are some popular plugins:

Pando: Easy, fast and reliable way to share large files – even folders – with friends, up to 1 GB at a time.
31,757 downloads since June 20, 2006

YEmote:  Access ALL the secret and hidden Emoticons quick and easy. Click animated smiley to be insert automatically into your text.
29,201 downloads since July 11, 2006

Yahoo! Greetings eCard: Browse from a selection of eCards to send to your friend while chatting.
13,358 downloads since June 20, 2006

iTunes:  iTunes remote for Yahoo! Messenger.
13,125 downloads since July 18, 2006

Eazibo: The best way to interactively and instantly make flowcharts or diagrams, share photos and make annotations with your friend online connecting. It's called "Instant Graphics."
11,900 downloads since July 18, 2006