Twitter is doing its part this Small Business Saturday (Nov. 24) this year with its promotion offering up to 10,000 new small-businesses advertisers $100 in free credits to pay for Promoted Tweets or Promoted Accounts. The offer is extended to U.S. businesses that already have active accounts on Twitter but haven’t advertised on the site yet. Twitter ran a similar promotion when it first started pushing its self-serve ad program in February. Small businesses interested in applying for the program have until Dec. 14. Twitter isn’t the only big-name company participating in Small Business Saturday this year