While blogging, several times there comes a need to spice things up or try something new to make the readers happy and even more interested and hooked, to do that you need to make different types of posts with different types of content, they way i see it there are the following types of contents that i noticed as a reader and a blogger.
This post also serves as my blog content guide, types of content you could and should have on your blog to promote it further and/or build interactivity.
Tutorials & How-to Posts, Teaching people how to do a certain task is one of the best type of posts you can ever have on your blog, people are constantly searching google, yahoo, msn and all the other search engines about how t0 do things, other then that if your blog has relevant enough posts on a certain topic then you can keep all the visitors you get via SERPs as rss readers.
News & Updates on a niche, blogging about news on the high rollers in a certain niche is also a plus that way you can pull in all the webmasters and fans of that particular niche, think of this as techcrunch, they blog about the latest happenings and updates on the tech scene and webware as well. Not only tech fans go there but webmasters subscribe to it too because of the up to date relevant enough.
Rewrites and Your Opinions, if you have a feed reader I’m sure you want to write a few stories in your own words, stealing content is indeed wrong but offering your own opinion on the matter isn’t so go ahead pick a topic from your feed reader send a trackback (which is good for traffic too) and start blogging on it. Thats what we usually do, right? - Search - Read - Blog, why should this be any different?
Reviews and Sponsored reviews, where as people love to listen you teach them stuff they don’t know about they love it even more if you review stuff that they don’t know about, this is why the webhosting review niche sky rocketed so fast.. Anyway, writing up reviews of new sites and/or new products, specially the ones relevant to your own niche can give you alot of authority at google and a boost in your reader’s responsiveness, if you take a closer look at tech/mmo blogs you’ll see that readers comment more on reviews then general news,tutorials..etc
Guest Posts by other bloggers can give your blog a fresh opinionated post that attracts a wider array of readers and better relations with other bloggers for you as well!
Personal Life posts do fairly well if you can present it well enough if you have a responsive readerbase then you’ll get a fair amount of sympathy but all in all its not as profitable as the rest of the types of content..But you might get a long tail serp though. These personal life posts can also include videos and audio that you might have made to further discuss your situation.
Video Blogging is really catching on among webmasters, shoe and carlocab is already adding videos to their blogs actively and it’s a really good tactic to get more personal with your readers on a professional level, there are things you can explain better on video then you can writing on a post.
Podcasts, who doesn’t wanna be a radio DJ?.
The coolest thing about blogging in my opinion is the Podcasts! Its good to read interesting, new, fresh content that has alot of useful information and great tips to make my life easier and more profitable, but its even better when i can not read all of that and just listen to the whole post. 
- And that’s how podcast listeners usually think when they are reading posts, if you have an option of a podcast along with each post like an audio version of each post, you’ll definitely increase your reader (listener) base 
