Since Facebook changed its chat I hear a lot of people complaining that they prefer the old chat where you could see only your online friends and not those that Facebook decided you should see even if they aren't online. Here is an intresting *fix" about this that I read on Gizmodo. I copy directly from Gizmodo.
Gizmodo reader Tal Ater agreed that Facebook's new chat system is a clusterzuck of confusion, so he created a little program to fix it! It will take off the list anyone who's offline. Here's how to do it:
Drag this bookmarklet and drop it on your browser bookmark bar: Fix Chat
Open a new Facebook window, click on Fix Chat on your bookmarks and open the chat bar.
That's it. Now Facebook chat will only show the people who are online (green icon) or recently online (with the away icon).
It works great but, as always, run this software at your own risk. You will need to click on the bookmarket in every new Facebook window (I keep mine open most of the time, so this is ok). If you use Windows, you can also run a program that will fix the chat forever. You can find it at his download page. Tal says that he's working on a program that will fix the chat permanently on Mac and Linux systems.
I've tested it and it works just fine! How about you?