Blogs are the great equalizer

Blogs are the great equalizer because they simplify the task of adding content to a website on a daily or weekly basis. They make it simple for the average joe to add content to their site on a daily basis with just a few clicks of the mouse.
What is more, the spider search engine companies recognize this and make it a point to spider the blog networks on a regular basis, sometimes a daily basis.

It may take a spider search engine up to three months to spider your site if you go directly to their submission page to add your domain to their database. On the other hand, with a blog, you can put a story about your domain on a blog with a link to your domain, and your website can generally get crawled within a week or so of putting your link on the blog.

Daily additions to your blog should be your goal. If you do not have time to do daily additions, you should at worst do a weekly addition to your blog.

Just like in the real world of websites, if you don't update your blog on a regular basis, the spiders will save their time and resources by not spidering your blog on a daily basis. If however you do update on a daily or near daily basis, then the spiders will visit your blog with the same fervor you bring to your blog.