How do I stop facebook telling people I have joined groups in the newsfeed?

[Beth]

I see groups I want to join but don't particularly want everyone to know everytime I join them, I think it's quite annoying. Is there a setting to stop this?
Thanks.

[★angel★]

delete recent activities on your wall.
when mouse pointer going to certain activity automatically remove button appear.

[Jude]

Go ahead and wipe off all new activities, after that log out.

Log in again in about 5minutes. Then go to settings and
customized what you want. Simple.

Best Of luck!

[shawnakchristie]

Unfortunately, facebook won't let you set it default to not show these things in the newsfeed. What I do, is I go to my profile and delete the things off manually so they will be removed from the newsfeed. It's not a great solution, but it works until facebook changes the setting.