Summary: Wall Street gave up gains after cheering the better-than-expected Jobs Report at Friday's opening bell. The Labor Department said 257,000 jobs were added in January, more than the expected 230,000. The unemployment rate, however edged higher and is now at 5.7%, up from 5.6%. RadioShack's much expected bankruptcy is now a reality. The electronics retailer has a deal in place for Sprint (S) to takeover up to 1,750 of its stores. Twitter (TWTR) started the trading sharply higher after beating earnings and revenue estimates. The social microblogging site did post disappointing user growth and said Apple's (AAPL) new software rollout was to blame.
