Yahoo! Messenger is one of the best meesengers availble..one of the most important point is its easy to use...unlike many othe messengers, it has the option of sending offline messages, that is even if the friend we added in our list is offline, he will get the message sent by us whenever he comes online..this feature is present in icq but not in msn messenger..then during login in th login window we can decide whether we want to login as invisble so that the friends or buddies we added will not know about our online status...in msn messenger also, there is a similar option but we can opt it only after we r online after we have loggen into it..not before logging..thus less use beacuse with in thr time delay to change to offline all thr buddies will know about our satus in msn messenger, but this is not the case in yahoo mssgr..also we cab create our on skin fri yahoo messenger..lol...fro example u could create a new skin with ur SWEET HEART’S photo and it can be applied under EDIT/PREFERENCE/APPEARANCE..TRY IT ..ITS WORTH TRYING....