Chat from within Hotmail !!!!From Gmail, (even without GoogleTalk), i can Chat with other Users using the integrated messenger feature.Though Hotmail claims,this feature is available for HOTMAIL users as well, i didn't find it anywhere.
According to Wikipedia"
As of June 2006, Hotmail users can now send instant messages from within Hotmail using the integrated Web Messenger function, without having to be signed in to Windows Live Messenger or have the program installed at all.
At the Hotmail main screen, users can access integrated MSN services such as Calendar and Contacts (the latter being shared with Windows Live Messenger)......"
check this link under Miscellaneous Section
I wonder if it's there.