Do you give a heads up when logging in to someone else's accounts?

Always give a heads up when you log in to someone else's account. Also, when you access a company account - which many people may use, like google [at]ssw.com.au - send a heads up to that email so others know you are the one accessing it.

A quick IM, SMS or email is enough to let the account owner know that you are the one accessing their account and it's not being hacked.