Blogs
Why search blogs?
Blogs and other social media sites can be useful for:
- real-time conversational type postings
- conducting firm, competitor or product research
- seeking grass-roots opinions and comments from consumers and product users
BEWARE
Be careful to understand inherent bias.
Carefully consider viability for decision making.
Blog Search Engines
Social Media Meta Search Engines
Corporate Blogs
Industry-Specific Blogs
Blog Search Engines
Blogpulse 
In addition to being a search engine for blogs, this site contains some really cool business intelligence features:
- Trend Results -visually track "buzz" over time for your search terms; click on any point in the graph to view the conversations.
- Conversation Tracker - creates a threaded view of the conversation by performing a depth-first traversal of the conversation graph.
Technorati.com
Ask.com - searches blogs and podcasts
Feedster - searches blogs and podcasts
Topix - especially useful for limiting blogs to local news for specific locations (e.g. Atlanta) or specific sources (e.g. CNN, New York Times, etc.)
Icerocket
Google Blog Search
Yahoo! Blog Search
Social Media Meta Search Engines
Serph - searches Del.icio.us, Flickr, YouTube, Technorati, Feedster, and more.
SearchCrystal - returns results with visual representation; searches blogs, Flickr, video, RSS feeds, and more; allows you to compare, remix and share results.
Corporate Blogs
Many companies, including Fortune 500 firms, actively use blogs as a way to announce new products and services (or the end of old products), to explain and clarifiy policies, or to react on public criticism on certain issues. It can provide a unique window to the company culture. External corporate blogs, by their very nature, are biased, (as is all other information posted on the company website).
The business blog can provide additional value by adding a level of credibility that is often unobtainable from a standard corporate site. The informality and increased timeliness of information posted to blogs assists with increasing transparency and accessibility in the corporate image. Business blogs can interact with a target market on a more personal level while building link credibility that can ultimately be tied back to the corporate site.
Source: Corporate Blogs, Wikipedia
CorporateBlogsList
Exhaustive list of links to company specific blogs (organized alphabetically by company name) including CEO Blogs, Product Blogs, Government Blogs, and more. Many companies are additionally launching podcasts as communications channels.
Fortune 500 Business Blogging Wiki
This is a directory of Fortune 500 companies that have business blogs, defined as: active public blogs by company employees about the company and/or its products. For an interesting visual representation of the ways the these companies are using blogs for business purposes, see: Traits of Fortune 500 Blogs.
Industry-Specific Blogs
Marketing
Advertising Age Top 150 Media & Marketing Blogs
Lists and ranks AdAge's list of top marketing blogs
The Power 50 Marketing Blogs Search Engine
Use this search engine to search across all 150 top marketing blogs.
Check out this page on our Marketing Concepts Information Guide for a number of recommended blogs.
