Isha, no one gives out full information. It can be easier than you think to be outed just by posting a little bit of information. Just by giving my age, location, and work status is enough that someone I know in real life reading my posts might figure out who I am. Especially if they can detect a writing style or way of thinking from my posts.
The absolute worst thing you can do is give two dates of significance, with or without the year. That will almost guaranteed to get you outed. Any two of the following: birthday, wedding anniversary, date of breakup or divorce, start or end date of a job, family member birthday, or any other date of significance that others know about. If I say my birthday is March 17 and I got married on August 28, this would hold true for only 1 in 130,000 people...hence anyone who knows these two dates will probably figure out it's me, especially if they already know my age and location (assuming it was true, and assuming there's people who know both of these dates....these dates are not true dates for me, I'm just using them as an example...I'm not even married)
I purposely hid my birthday so I wouldn't be outed. Remember the information I gave can sadly be enough for someone to figure out who I am, but by withholding important information no one can be 100% certain.