I am married and have IG (art and powerlifting stuff), Twitter (funny stuff, drunken blog, networking), FB (family and close friends only), Pinterest (home remodeling) and Tumblr (typography class requirement).
At times, all of these have caused an uproar because of their ability to instant message without a trace. IG has an option in their direct messaging that even says "Hide"... Choose that and the message gets swiped from yours and the recipients' mailbox.
That shit can get you in trouble. Think about having just bitches on your IG and you're swiping through their pictures all day while sitting by your spouse, maybe even ignoring her while browsing. The quote thing like
Wallyd said is the worst passive aggressive way for women to make themselves heard and it sucks balls. We call that shit dry-snitching and it's no bueno.
Facebook can get ugly because at some point you've become friends with everyone you want to be friends with (minus new acquaintances) and FB keeps suggesting people to fuxk with based on mutual connections, so next thing you know some broad who's bored with her voyeuristic snooping finds you and says to herself "lemme see if so and so are happy..." And boom - ex-girlfriend is asking how your marriage is and spilling their problems on you.
I call all these apps soft-sells. It's easy to show interest, it's easy to ramp it up without looking like a creeper and it's easy to back off just to ramp it up again and re-generate interest. If I were a predatory thrill-seeker I'd be able to pick apart marriages based off status updates and quotes and pictures and instant messaging and likes and pokes and all that bullshit. It's valid that people are worried by this shit. 20 years ago you either wrote a letter, knocked on the door or called the fuxking house phone. Now you can set notifications to "no" or "silent", put phones to sleep, erase messages...
We have set rules as a couple, reset rules, revamped rules just to keep each other comfortable. No reason for either of us to be friends with exes or old **** buddies or hot single people that we don't socialize with on the regular. No likes for opposite sex selfies unless it's family, no likes on posts that are overly sexual, no sideways disses via quotes or comments, we put restrictions on who we can be friends with and who we can't, always try supporting each other openly to show the world we are a couple and enjoy life together...
I see it all the time: Unhappy person doesn't say they're married on FB, never posts pics of their spouse, spouse usually doesn't have social media, gets "you're hot" messages all the time because they've excepted a zillion friend requests from people they've never met... Having a bad day? A bunch of eager people waiting to support. Yeah, to support deez nuts!
Being single with social media is the easiest road to getting pussy that's existed since cavemen and wooden clubs. Snoop on, spouses. Snoop on. What might seem innocent to one could seem devious to another.