Thought block. Though it is a term for certain psychiatric disorders; it is now often used to express temporary poverty of expression, either verbally or in written ways.
It might happen you are not finding good topics to write and some posts really idiotic posts at that time. To get big traffic or to make money, quality does not matter at all. You will definitely find a guy who resided in your poor poor neighborhood ago and now making $45,000 per month with literally no educational excellence.
But, quality matters to you and us. Our goal is to create such websites, which people will visit years after years. Your or our goal is to get quality readers too.
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It is matter of fact, for the first few months you have to post some idiotic yet popular posts to catch visitors. But, after you get a good niche; you have to shift mainly to quality. We will discuss later more about the shift; as a good blog is like a classic racing car with manual transmission; you have to shift the gears at the right time.
Here are some topics to write blogs, which are almost guaranteed to give you good ranking in search engine result pages for long run, if you do care about SEO.
You will find that we already wrote articles on most of them; some we avoided deliberately for different reasons, obviously you may need to skip some of them too.
These topics are among the most searched terms in Google search. You need to change the titles a bit.

Money
- How to make money selling stuff on online stores
- Marketing on a budget
- Starting a company with low budget
- 4 hours work per week can make a big money
- How much money can be earned from blogs
- How much money can be earned from forums
- How can you make money with advertisements
- How to double your AdSense revenue
- How to make money with a blog
- How to save xy % on your (some household things) bill
Blogging
- How to get more repeat visitors to my blog
- Using Google Analytics to improve the performance
- What is viral marketing
- 100 possible topics for blog posts (on the particular topic)
- Why I use WordPress for my blog
- How to customize a wordpress theme
- Why links are important for your blog
- How to write good titles for your posts
- Things to know about the search engine positioning
- Any hidden Google Story
- 10 things to consider while designing of a blog
- How to install wordpress
- 20 most popular wordpress plugins
- How Twitter or Digg can bring more visitors to your blog
- Why I started blogging
- Most influential website / social networking today
- How to analyze a web page’s SEO
- Blogging and spam
- Blogging and comments
- SEO of WordPress
Computer or technology (grossly)
- Review of the latest gadget (can be costly for you; you can allow guest blogging)
- Sony VAIO is great laptop
- Dell is the best designed laptop
- Why the top professionals uses MacBook Pro
- Why most Film-stars use MacBook Pro
- Why Windows 7 / Linux / Mac OS X (Pick only one) is bad
- 4 free graphics / photo editing softwares
- The difference between the iPad and cheap Chinese iPad clones
Computer (Security)
- All possible types of server crashes in separate posts (may be 100 itself!)
- Best free premium antivirus
- Antivirus with best post sales support
- Best free Antivirus
Computer (Server)
- Why Linux server is better than Windows server
- Mac server or Linux server which is the best
- Apache basics
- Write something about .htaccess
- Write something about .httpd
Windows
Difficult to say! Too much competition.
Linux
- Why bundled / OEM Windows sucks
- Customize your Linux PC
Mac
- Mac Wallpapers
- Mac icons
- Free Mac applications
- Maintenance of your Mac
Hair, beauty etc
- How to get a beauty spot
- How to tan the skin easily
- How to look more attractive
- How to become attractive like a brunette
- How to color hair at home like a pro
- How to cut hair like a pro
Television, Movies
- My favorite TV series
- Hot movie xyz
- Review of xyz movie
- Why I like / do not like the (the popular TV serial)
Buying / Service
- No need to call for pro service, do it yourself at home
- Tips for buying a car / a MacBook / iPad / laptop / Nokia mobile / Blackberry
Travel
- Traveling itself is a hot stuff; write about any spots
