Writers write stories that is why they are called storys because they are not all true. No one is going to write every detail of there life on a blog for people to read even if they give that impression, it is naive to think that every thing we might read on a blog is true, or even what we read in a newspaper or any where else for that matter.
What we do find on a blog is that from what people write about comes an insight to that person’s personality, probably a better insight than we might have meeting them on the street. They give away some thing of themselves in the things they choose to write about, and there view on that. Little by little we get to know what to expect from them.
0f course there are people who deliberately mislead us on blogs and every where else but usually they give themselves away sooner or later.