And believe it or not, not having a Facebook account does cast a shadow which makes you more interesting and mysterious. Why don't you want to telegraph your entire social graph to the world? What are you hiding?!
But in all seriousness, none of these are making you a target of anything by itself. If you are _already_ a target then they make you an interesting outlier that needs deeper investigation.
If you want to be boring in data it has look like other data. Sometimes being absent entirely in data is interesting.