It simply means "current situation". There is a box on Facebook called your "Status Update". It is simply where you post, if you wish, whatever is happening at the moment. It might say "Just heading off for a long walk in the country" or "Terrible hangover today, but it was a great night". It can be your emotional status, physical status, location status, or anything you want. It doesn't have to be your thoughts or opinions although those fit perfectly. You can ask a question in that box too (ie "Who thinks I should paint my sitting room bright red?) It can be a fact. For example, this morning, mine was "Hurrah! My cat hasn't vomited for 24 hours!" (Believe me, at the moment, that is something to celebrate.)
Remember - correct capitalisation, punctuation and spacing make posts much easier to read.