Almost every industry out there has some sort of industry blogs that a business can comment on to help with their link building. It’s very rare that you find an industry without a place to leave any comments even if it might only be a few. There are ways a person can find industry specific blogs if they are uncertain on where to start looking.
Blog Directories: There are many blog directories out there like Blog Catalog or Blogged that showcase some of the best industry specific blogs in any industry. It is a great starting point to start with your research when you are trying to put together a blog commenting campaign.
Blog Rolls: Often times when you find a blog in your industry they might have a blog roll set up to show their audience other industry specific blogs that are relevant. I have come across some blogs that have been known to showcase almost every single important industry blog in their specific field in their blog roll really helping out my research efforts.
Blog Search: As simple as it might sound try just doing a search for your specific blogs in the search engines. See what you come up with. You might just find some of the best blogs to leave comments on directly in the search results. Try doing a web search and also look for keywords in your industry under the actual blog search attached to your favorite search engine. Most search engines will allow you to actually do a blog search right through the engine.
Blog Lists: Use the word “lists” in your search phrases to find others who might have put together a list of your top industry blogs already. Putting together a list of the best blogs in a certain industry can often times bring nice rankings along with traffic so someone in your industry will often times complete the grunt work to find the top industry blogs for you already.
Unless you are in a very tight niche you should be able to find some blogs in your industry where you can leave educated comments on. Just take the time and look around in order to find what you are looking for.