yes, its true that if you really don't know what to post just post whatever interest you. Because in there, you can think a lot of things and can even make it more interesting to read, and most of us want to smile and will look at the funny things since the world is very serious to deal with. :) just smile and relax and post whatever you think is interesting, the people will like it especially when they saw that your post is worth to read. :)