You have just read a poignant blog post. will you still be thinking about it tomorrow, or will you forget it immediately?

It really depends on the person and how poignant that blog post is.

Poignant means deeply moving, so if you are touched by what you read in the post, you may still think about it in the days to come. It depends on what kind of a person you are - if you are emotional, easily touched, etc.