Particiation of spouses is greatly encouraged.
It gives a common purpose.
Let's them know what you're up.
Brings them closer to people with names such as slaney, Dustybun, rogerrabbit, Chiefpanda, kettledrum, shaneystar2, etc (perhaps that's not such a good idea!)
Shows them that your not really in a chat room - more a communal padded cell.
Notice that they didn't want to know before (when they thought it was boring) but as soon as you start having a good time, giggling over your monitor ... That's quite a different story!
Let them get their own pc I say ... and their own circle of loony friends!
[Notice how my attitude/opinion can change suddenly! ]
Worrying!