Update your blog daily and it will help the Search Engine bot (especially Google Bot) to crawl your website frequently. Here are few suggestions which will help your website to be crawled by the bots frequently.
1. Phrase unique content
2. Give few external links and internal links to appropriate word(s)
3. Give proper title to your posting
4. If possible update your blog daily with good and relevant content
This will definitely help you to increase the search engine visibility of your blog :-)