There's a new, little-known tool that popped up recently at Google, called Google Alerts. This service allows you to request email alerts based on search terms you specify. How can this be useful?
Find Out When Your Website is Getting Indexed by Google
The second your latest blog post get's indexed, you will know. This can give you a good idea how often Google is crawling your site. (Note: You will probably have to wait for a couple of alerts before you determine this.)