I rarely (never) post anything relevant to Facebook. No status updates, no conversations, no images. Nearly everything I post is a link to something else. Why? I prefer to own my content, controlling how and where and when it’s displayed.
Facebook is great for a lot of reasons. But it’s a closed system for content. Getting it in is easy. Getting it out not so much. That may not matter now, but when Facebook goes away or becomes irrelevant, I don’t want my content to suffer the same fate.