There are several ways to get traffic to your blog:
1) From other hubpages users
2) Facebook - link to your hub
3) Twitter - link to your hub
4) Search engines (Google mainly)
Become an active member of hubpages - answer questions, write on the forums, comments on other people's hubs. All of this will get you more views.
Finally, I'd say the better the hubs you write the more views you get.