Perhaps your brother sat on his cell phone and inadvertently posted nonsense on your wall. Maybe after a long talk with your mom you now feel sorry for posting those unflattering photos of your ex-best friend. Regardless of the reason, follow the instructions below to remove or change activities from social networks.

FACEBOOK

Start by logging into your Facebook account.

• Post: To remove or edit a post or comment that you created, click here for instructions. To remove or hide a post from your timeline, click here for instructions
• Photo: To remove a photo that you posted, click here for instructions. You also have options in case you are tagged in a photo that you do not like
• Private messages: While you can’t go back in time and un-send a private message, you can delete the conversation from your own Facebook account by following the instructions here

TWITTER

Start by logging into your Twitter account.

• Tweet: To delete a tweet, follow the instructions here

GOOGLE+

Start by logging into your Google+ account.

• Post: To delete or edit a comment or post, follow the instructions here
• Photo: To delete on of your own photos, follow the instructions here. To remove a photo tag, follow the instructions here

FORMSPRING

Start by logging into your Formspring account.

• Report abuse: by following the instructions here
• Answer: To delete an answer, follow the instructions here
• Question: To delete a question in your inbox, follow the instructions here. Unfortunately, there is no way to delete a question that you have sent. Formspring explains further here