I recently attended a presentation on the topic of social media. The speaker said that in todays connected world the online interactions of a professional are as important to their career as their offline interactions.
During the Q&A session a member of the audience asked:
"What should I blog about?"
This was his response:
Most people have something of particular interest to them within their industry.
The question "What should I blog about?" is commonly asked and I'd encourage you to try to identify your main interest (which will most likely be your strength) and give it a go.