Yahoo’s second-quarter profit rose 8%, boosted by the cost-cutting the Internet company has imposed as it tries to bounce back from a long slump. The results announced today marked Yahoo’s first quarterly earnings increase since the first three months of 2008. Yahoo claims it made $141.4 million in the three months ending in June, up from income of $131.2 million last year. Revenue for the period slid 13% to $1.57 billion. That’s the biggest decline so far in a slump that has seen Yahoo fall further behind Internet search leader Google in the online ad market.