Glassdoor Buys JobVent, By Way Of Twitter, a Sausolito, Calif.-based online career and workplace community, has acquired JobVent, where employees can complain about their employers. Scott Kirsner broke the news, saying that JobVent founder Craig Spitzkoff announced the company was for sale via Twitter, and that the sale price was less than $100,000. GlassDoor has raised around $9.5 million in VC funding, from Benchmark Capital and Sutter Hill Ventures.