If you want to use Yahoo messenger listing contact wisely, the yahoo messenger 11 version allow you to do it very easily.
If you open yahoo messenger you can see a big button calls "contact" under the regular application menu. There are nice three options to arrange those contacts:
1.Sort by name – will list the contacts by alphabetic order with no regards to availability.
2.Sort by availability – will let you see only online users first and those who’re busy or offline last.
3.Sort by recent activity – will show you the contacts that spoke with you lately at the first places.
We’ll also suggest working with "compact list" (also under the contacts menu) so it will fasten the application by avoiding presenting details for each contact. That way, only when pressing on the contact, all details such as picture etc will appear.