No, I'm not taking about adding bass drums to the background of your blog. I'm referring to the pattern of your blog posts, and how they should be congruent with your audience’s lifestyle.
How Often Should You Update Your Blog?
Readers, in general, want to know what to expect. When users bookmark your blog or subscribe to your RSS feed, they are actively inviting you to keep communicating with them. It is important to keep up with your readers’ expectations and add posts frequently. However, if you are UNDERPOSTING or it’s been a while since your last post, your audience might think that you vanished off the face of the earth and forget about you. They’ll slowly stop checking your blog and may even unsubscribe from your RSS feed.
Inadvertently, if you are OVERPOSTING, there is a chance that you’ll overwhelm or annoy your readers because they simply can't keep up with all your posts. As a result, your readers will simply give up and unsubscribe.
How Long Should Blog Posts Be?
While it’s important not to under- or overpost, another important factor is making sure your posts are generally a similar length. According to Darren Rowse and Chris Garrett of ProBlogger.com, the general opinion is that a reasonable length for a blog post is around 250 words . This parallels with research indicating that blog readers have notoriously short attention spans - staying on a blog for about 96 seconds on average. So it's important to get straight to the point and keep your blogs short.
However, this may not always be the case. You might have a lot to write about on a certain topic. In those cases, your blogs will be longer. So a good general rule to follow is to keep most posts to a short, similar length with an occasional long post of necessary.
Once you've found a blog post rhythm that you are comfortable with, it's up to you to keep up that frequency to maintain your audience. Remember: going off rhythm might bump your audience off course.