Piaras Kelly (pkellypr.com) wrote a wonderful article on his blog. He gives 12 useful tips on writing content for your blog. Here’s the summary:

1. Use catchy titles - this is useful for people who read your blog through RSS feed.
2. Be unique - there are so many blogs in the internet. If you want people to read your blog and visit regularly, you have to give them something unique, something that they won’t find on another blogs.
3. Make sure to credit your sources - Darren (problogger.net) mentioned about this on his post here. Stealing content is bad, but stealing without giving proper credit is the worst of all.