Angel investing trends and highlights from 2013 show: - $20 billion was invested annually in the US through angel investors, with most going to seed-stage companies. Over 258,000 angels invested on average $10k-$100k each. - Early investments in companies like Facebook, Airbnb and Dropbox show high potential returns, though many startups fail outright or have low returns. Success stories produce outsized 20x+ gains. - Median angel round sizes grew to $700k in Q1 2013, with pre-money valuations averaging $2.5 million. Internet deals remained most common at 37.2%, followed by healthcare. Strategies like due diligence, industry expertise, syndication