When to tweet about your posts

About a week ago I saw a couple tweets that made me think. So I embedded the tweets in a post and added a short comment. I thought it was vaguely insightful, and considered tweeting about it, but in the end I decided that my addition was too insubstantial. 

A week later I'm pleasantly surprised with four visits to that page originating from Twitter (the t.co links). I'm amazed that anyone found my blog at all, but I was really happy to see that someone thought my post was worth a share on Twitter. One advantage of blog posts over tweets, I suppose, is the longer half-life.