There is a way to use Twitter itself to find new articles.
Hashtags are like category markers for tweets. You can search Twitter to find hashtags applicable to your industry. Simply go to the Twitter search page, type in terms your industry uses, and look for terms beginning with the # sign in the results.
I use SQL Server Profiler in my daily job. If I want to see what hashtags are associated with that term, I search for it and find the hashtags: #sql, and #sqlhelp. Both of those hashtags bring back several pages of tweets.