Chatter: can user delete feed or comment?

Chatter: can user delete feed or comment?

Sometimes user need to delete feed or comment post to Chatter, but can user (read: not system administrator) to delete it?

Yes, you can delete posts and comments that you and others have made in these areas: on the Chatter feed on your profile, on records you own, and on posts and comments you’ve made in other feeds. Deleted posts disappear from your feed and you can’t restore a post after you delete it. Users with the “Modify All Data” permission can delete all posts and comments.

Here a quick summary:

• ser can delete their own comment
• User can delete other people comment to their feed
• User cannot delete other people feed

But, if you are group owner of a group, you can do more things within the group:

• User can edit group setting
• User can edit group information
• User can edit group description
• User can delete people comment to group
• User cannot delete feed on group change

Extra: use @username to show your post on people feed, even that people is not following you, and follower of that user will see that feed as well.

Mass add member to Chatter group

Salesforce.com give 5,000 chatter free licenses, it is good for organisation to use Chatter for collaboration as it is free. But, adding hundreds or thousands of user as member into many Chatter group is not fun, if do it manually.

If you are Salesforce admin, here tip to make your life easier :)
You can use Data Loader to mass add member to Chatter group.
1. Open Data Loader and select Insert
2. Select "Show all Salesforce objects"
3. Select "Chatter Group Member"

4. Map "CollaborationGroupId" to Chatter Group Id and MemberId to User Id.