"How often can you post to your site?" is an extremely popular question, to which there is absolutely no right or wrong answer. Twice a month? Twice a week? Twice a day? Just one single time a day?
You'll find plenty of different blog posts promoting different scheduling for blogs. Most of them recommend posting a few times per week, maximum. Here's my take on the issue - both blog posting schedules that matter, and to what types of blogs they are applicable.Understanding Posting Schedules
First of all, you will need understand that there is no right/wrong answer because of this question, as I've already stated. Different timings may or might not work for various kinds of blogs.
The following advice isn't something that I really believe works for each blog, but it's what works for some (after my research).
How User Engagement & Blog Posting Are Related
First of all, it is a myth that readers will be annoyed in the event that you update your site daily. It's just a myth, without real evidence to back it up. Among my all-time favorite blogs sends me an e-mail every day or every two days.
I love it. It gives me more information when compared to a month of Sundays of autoresponder messages from any other blog.
Having said that, users also don't mind if you post only once a week. Truth be told, readers are only looking to see how they can benefit from your blog - that's virtually the only reason why they're there and why they registered to your e-mail list (unless they're friends or family.
Alright - let's get down to the posting schedules.
Daily/Multiple Times EACH DAY
Oooh! I feel I'll provoke a substantial amount of controversy with this one, aren't I?
But yes - I believe that posting multiple times each day can be beneficial to blogs. If for some reason you're not available to post multiple times a day, then you should make an effort to post at least once a day. For pretty much 95% of people scanning this post, that's what you ought to be doing.
You need to definitely post this often in the event that you run one of many following blogs, or engage in among the following business strategies.
Informational/Tips Blogs
Take this blog for instance - it deals mainly with blogging, Online marketing, and SEO tips. In other words, it offers valuable information to those that read this blog regularly.
To be branded as an authority in your niche, your blog needs to have as much helpful, quality content on it. If that means posting 3-5 times each day, go ahead.
Most blogs on the Internet (including yours) will fall into this category.
Personal Blogs
Let's face it - personal blogs usually don't get much traffic. The previous rule about readers coming solely for personal benefit once more applies here.
There's little benefit a reader can gain from your personal blog unless you're A.) Hilarious or B.) An excellent writer who is able to hold people spellbound.
Chances are, you are not either. But let's just suppose that you decide to go on and take up a personal blog regardless. You have to be posting once each day.
For some personal blogs, I wouldn't recommend more than once each day (because hey - people like to have a little time to think about themselves, and not just you).
However, once each day is usually necessary, if you need any sort of traffic. It is because that the people who do follow and read your blog regularly obviously think you're a fantastic writer or funny. And, they need their daily dose of fantastic funny (but again, don't overdose).
The Benefits
No doubt about it, there are certain benefits you obtain from posting daily that you will not get in the event that you post less often.
Search Engine Optimization
Although this cannot be outright proven, it's becoming clearer that Google favors blogs that post content on a regular basis throughout the day.
When you publish a fresh post, Google is automatically notified. Eventually, their spiders are certain to get to crawling your pages and ranking them.
If they're notified quite often, that means you blog often. In the event that you blog often, which means that your blog is active and regularly providing content to your readers.

All things said, this can not be proven, but it is a general trend I see after conducting research in the SERP's.
Alexa Ranking
Although posting 10 times each day imply that you'll automatically be promoted to the very best 1000 blogs, the blogs that engage a higher-frequency posting schedule often rank higher, in comparison to blogs that post less frequently with exactly the same quality standards.
Case Studies
I recently found a forum thread where an Internet marketer laid down his strategy to go from $0-$200/day in AdSense earnings in two months flat.
What he basically did was outsource cheap article writing jobs to freelance writers. He hired plenty of 'em, posting on his blog 30-40 times. Every. Single. Day.
The effect? He's sitting pretty with $200/day in AdSense earnings. In 8 weeks, flat. And that's only one of his online businesses.
Let's take another example. https://www.fcsurplus.ca/shopping/blog of mine, for whom I recently guest posted, includes a prestigious Alexa rank of 44K, amassing a total of 14,000 page views every single day.
He posts at the least three times a day. And it's taken him a measly two years to be at where he could be right now.
That's pretty good, in the event that you ask me.
HOWEVER...
However, this rule doesn't apply to all sorts of blogs. Actually, posting multiple times each day, or even once daily, will be disastrous to certain blogs.
Business Blogs
By business blogs, After all blogs that participate in already established, offline companies - Wal-Mart, for example. These kinds of blogs shouldn't - I repeat, shouldn't post more than twice weekly (and really, once a week is all you need to be doing).
Why?
Simply because those types of blogs aren't designed to be updated regularly. More often than not, they're simply about discounts, or business news.
They have no dependence on SEO (unless it's a local service people actually seek out online). Essentially, it's only a front that says "we're online too".
ARE YOU EXPERIENCING Something Worthwhile TO STATE?
You have something worthwhile to state? Something that will in actuality help/inspire/motivate people? Do you?
You don't?
Then don't say anything.
Simple as that. If you're not sure about whether you need to blog everyday, then blog once you have something to say.
However, make an effort to maintain some sort of consistency. If you get sudden post inspirations, then go ahead and write your blog posts, but don't publish them - yet.