Most of my fellow genealogists/historians are trying to make a go of this as a business. Below are the tweeps I follow for business advice and resources, especially for small business owners:
@SmallBizBee: posts links to helpful marketing and other strategies
@BootstrapMD: focused on Maryland/Mid-Atlantic small businesses
@mdchamber: The Maryland Chamber of Commerce; advocacy group that posts helpful info regarding laws and other matters affecting Maryland businesses
@AIIP: The Association of Independent Information Professionals; wonderful professional organization — great support and information available from other members
@mtechumd: Maryland Technology Enterprise Institute; runs dozens of events throughout the year for Maryland entrepreneurs
@smallbiztrends: posts helpful links and does regular Q&A sessions over Twitter on various topics. [late addition: missed this one on my first pass!]
I’m curious to know who else my fellow genealogists may be following along these lines. Post comments here and I’ll do a round-up at a later date.