Do you want your Facebook actions to control what ads show up on your friends Facebook wall? Well that may just happen if you are not aware of the Facebook privacy setting that allows for this.
The Facebook News Feed and Wall setting states:
"Facebook occasionally pairs advertisements with relevant social actions from a user's friends to create Facebook Ads. Facebook Ads make advertisements more interesting and more tailored to you and your friends. These respect all privacy rules. You may opt out of appearing in your friends' Facebook Ads below."
So how can you disable this?
When logged into Facebook navigate to "Settings"
Choose "News Feed and Wall" from the privacy settings page
Choose "Facebook Ads" from the News Feed and Wall page and set "Appearance in Facebook Ads" to No one