Days pass fast

Is there a rule about how often one should blog?  Daily? Weekly?  Multi-times per day?  I really don't know the proper etiquite on this.  I'm going to assume one should write when the feeling strikes unless I find ou different.  Hope that will work.  I don't always have anything to say and sometimes I just don't have time.  And, afterall, I am a newby.  I don't think anyone reads these but me.  I'm not sure how that part works either.  Wow, what did I get myself into?