[quote1199739097=Dλrw!N]
[quote1199738340=Midway]
The number to the right means that the user has a specific amount of groups in common with you. Such as =(eGO)= Morbid (5); Wal-Mart and Morbid are in some of the same groups.
So of all the people you know; groups, friends, chat, and so on, there's a duplicate name - it's letting you know that =(eGO)= Morbid shows up in 5 different places.
[/quote1199738340]
Are you sure? I've got lots of friends who are in the same group as I, but I've never seen that numbers before.
[/quote1199739097]
I'm not 100% sure, but I have searched the Steam forums from head to toe in the past regarding this question and it always seems to point towards this. One of the administrators over there even stated that of all the people you know; groups, friends, chat, and so on, there's a duplicate name - it may not be in the same group, but it's letting you know that the user's name is seen in multiple places at the time.