(Click on headlines below to read each full story.) Government, vendor communities growing on Twitter, social media Federal government contracting communities are active and appear to be growing on Twitter and other social media, presenting new opportunities for small business vendors to interact and obtain key information online. Obama proposes $3.9T budget The president submitted a $3.9 trillion budget for fiscal 2015 to Congress on March 4. Bill: raise small biz goal to 25% House Small Business Committee Chairman Sam Graves, R-MO, is trying again to raise the government’s small business contracting goal to 25%, from 23%. GSA needs better measures of FSSI impact: GAO The Obama administration has been taking steps to include small businesses in federal strategic sourcing efforts. But the administration has not developed the baseline data and performance measures to see if those efforts have been effective, according to a new report from the Government Accountability Office. Don’t Miss Webinar: Twitter Training for Small Business Federal Contractors House passes FOIA bill The House passed legislation that would require federal agencies to make plans for using a single Web portal for Freedom of Information Act requests. Column: Avoiding Common Payroll Tax Issues Internal Revenue Service audits are not limited to just income taxes. The IRS also audits companies for non-payment of payroll taxes on payments to employees considered to be wages. Washington Insider: 11 win MRO The General Services Administration awarded 23 contracts to 11 companies for the federal strategic sourcing initiative for Maintenance, Repair and Operations Supplies (MRO).... OASIS contract winners The General Services Administration named the winners of the “OASIS II” professional services contract-small business track.... House passes FITARA The House passed an expanded version of the Federal IT Acquisition Reform Act (FITARA)....