If he puts his status on Messenger/Facebook saying that he is out when he is at home
Question

                What is your opinion of those who keep updating their status on websites like Facebook? For example they would update their status daily or even a few times a day and tell everyone what they are doing such as: I am at work, Going to school, doing this or that? What is your opinion of this.
Praise be to Allah.
    What the 
    Muslim is required to do is to be honest in all his statements, whether he 
    is talking about himself or someone else, verbally or in writing, because 
    Allah says (interpretation of the meaning):

    “O you who 
    believe! Fear Allaah, and be with those who are true (in words and deeds)”

    [al-Tawbah 
    9:119]

    al-Bukhaari 
    (6094) and Muslim (2607) narrated that ‘Abd-Allaah ibn Mas’ood (may Allah be 
    pleased with him) said: The Messenger of Allah (blessings and peace of Allah 
    be upon him) said: “I enjoin you to be truthful, for truthfulness leads to 
    righteousness and righteousness leads to Paradise. 
    A man may continue to tell the truth and endeavour to be truthful until he 
    is recorded with Allaah as a speaker of truth. And beware of lying, for 
    lying leads to wickedness and wickedness leads to Hell. A man may continue 
    to tell lies and endeavour to tell lies, until he is recorded with Allaah as 
    a liar.” 

    Whatever a 
    person writes about himself or his situation on Messenger or any other 
    website or means of communication, he must be truthful in it. It is not 
    permissible for him to write about himself that he is outside or in school, 
    for example, when in fact he is at home, because this is lying. If he 
    forgets to change his status (by typing or writing), he should change it 
    whenever he can. 

    And Allah knows best.