I Snopes check almost everything, unless it is clearly a humorous piece, which I see someone addressed below.

I've all but given up Facebook, I only use it to follow a few friends and organizations I am a part of, I've turned off most of the newsfeeds, I'll go to several reliable sources outside of Facebook, which I have been able determine are reliable.

I'd prefer to give up Facebook altogether, but organizations I belong to no longer update their web sites, and have all been pushed toward Facebook.

At rhe National Associate of Broacasters conventions speakers told the conferees to give up the web and move to Facebook for the interaction. That's happening in many industries.

I stopped posting memes when I realized a favored Trump quote showing what an ass he is could not be found. I don’t want to be part of the problem.

I've all but stopped pointing it out when other people do it -- no matter how gentle you try to be, today's climate of heightened antagonism makes people go from 0 to enraged in a heartbeat.

But on a personal level? That "grain of salt" I typically take with everything has turned into an entire shaker's worth, over the past couple years.

What about Satire?

Yes, and I also actively combat misinformation. It’s not a good way to make friends.

I've worked in science and tech fields too long to not check validity. It only requires between 30 seconds and 5 minutes to do adequate research.

If I had a nickel for every hoax I've verified as false and corrected with a link to just Snopes, I'd have enough for a nice lobster dinner. People are gullible, but they do try to be helpful. Those are fertile conditions for the spread of misinformation.

I fact check things. And if a FB friend posts something that is totally off beat. I check it for them and then add the info to their post. I don't post anything from another source, not even the weather, which is always incorrect

I try to avoid sharing misinformation, and point it out when I see it, including a link to a reliable source. This is also the primary reason I dislike and automatically distrust memes of a more serious nature, or graphics of a twitter post when it's usually feasible to post a link to the twitter post which is viewable even if you're not a member (or really a graphic of any kind of social media post).

I always provide a source..

If you see me ever not providing one I am just baiting someone who isn't and I know is wrong lol

I try. I may have been guilty of being too quick to share some things, but I try to check myself.

I try not to compound the problem by sharing misinformation, but I suspect that I have been guilty at some point.
Furthermore - if the (mis)information being passed is of any importance or specifically a possible health concern - I would argue that the person receiving the (mis)information is on the line to take some responsibility and check the facts.
If someone says drinking a cup of bleach 3 times a day will help whiten your teeth, I would expect someone to (either know better or) follow up with research of their own before downing a cup of bleach - otherwise... Hello Darwin.
Admittedly, this is all part of being a critical thinker and some folks just aren't there - kids, specifically are at risk ... Tide Pods...

Whew! I always submit if i can't back it up. I saw a new statement last week. I made a claim to it. I was asked about it. I could not find my resource and had to retract my position. Its a thing i do. I ask my wife to do the same thing. I trust what she says is right. Then i find out that she heard or assumed. I have to go back and retract because of this...lol. i was a machinist. I always worked with prints of instructions. I could make an educated guess. I left that up to the engineering department. They have a title above mine. I learned that the hard way.

Always look for a counter argument or a Google result from a reliable or multiple sources, the problem I find (particularly with politics) is that people are willing to state opinions as facts because they've found an echo chamber in which to confirm their views.

Not all of the time. I don't share much on social media, but I try to verify things before spreading them in that way, but sometimes in a conversation I will mention something I saw, but I will also usually say that I'm not sure if it's true or not.

yes for sure and it is everywhere. I question everything.

There are very few that knowingly share misinformation and fewer that will admit to it. The ones that are sharing it on purpose do so at pace commensurate with their agenda which is usually startling. Not sharing it further is the equivalent of watching your house burn and not lighting the last room on fire too.

I don't see how sharing misinformation would damage someone's health. If you mean that by sharing some misinformation that is used by someone who damages their health as a result, ok. But the act of sharing information in and of itself does no real harm. It may make the sharer look like an idiot, but no one is being forced to do anything. Misinformation creates a great amount of "noise" that, for many, I think, distracts them from the important stuff. I don't share this type of stuff at all.