I agree with mary there - creating the content for the blog that is relevant and useful as well as interesting and works from both a visitor / customer and search engine perspective is the biggest issue for me.
There are so many blog platforms, plug-ins and design templates available now that many other aspects are far easier than they ever were.
Sometimes, posting a content that will ensure in gathering an interest in your audience can become a daunting task. With all the posts I have written in my blog, I make sure that I can deliver the same amount of quality or even better than the previous ones and that is something that requires time and effort. Writing an article that will generate an impression to the targeted audience is always the one thing that I'm most concerned about when it comes to blogging.
Main problems is to add proper plugins you want. If you want to add multiple plugins facilities and chose a wrong blogging platform then you can get tough difficulties. So try to chose better blogging platform. My main problem for blogging is to create proper content related images for my blog because to get proper images we must have designer knowledge otherwise we have to use other images.