Twitter appears close to slashing another 300 jobs, or about 8 percent of its workforce, as it works to recover from a failed round of acquisition talks with several suitors. The job cuts likely would be in sales. Twitter might be taking steps to make itself look more attractive to investors in preparation for its third-quarter earnings report later this week, which is expected to disappoint once again. “Twitter was a challenged company before it was put into play by takeover suitors,” said Tim Mulligan, senior analyst at Midia Research.