Here are the Twitter accounts that I follow relating to Texas:
MyABJ Austin Business: The Austin Business Journal is the business authority for Central Texas
AustinChamber Austin Chamber: The Austin Chamber of Commerce serves Central Texas through its highly successful initiatives, programs, volunteer committees and events.
HOUBizjournal Houston Biz Journal: Strictly Houston. Strictly business. Part of American City Business Journals. Email: firstname.lastname@example.org
SABizJournal SA Business Journal: Weekly Business Newspaper providing daily Twitter updates and weekly in-depth analysis
austinrb Austin.RB: A community for Ruby programmers in Austin. Meetups on the 3rd Thursday of the month.