* Meta Q2 revenue rose 28% year over year to USD 60.8 billion; diluted EPS fell 13% to USD 6.18. * Operating income slipped 8% to USD 18.78 billion as costs and expenses jumped 55% to USD 42.03 billion, including USD 2.4 billion in legal charges. * Operating margin narrowed 12 percentage points to 31%; free cash flow dropped to USD 784 million from heavier capital spending. * Family daily active people increased 3% to 3.6 billion; ad impressions climbed 14% as average price per ad rose 12%. * Zuckerberg said AI is accelerating the core business; Q3 revenue is forecast at USD 61-64 billion with full-year expenses seen at USD 165-169 billion.