Today’s featured promo on MacUpdate offers Bookends for US$49.99 (50% off, retail $99). “Bookends is a full featured and cost-effective bibliography/reference and information management system for students and professionals. With Bookends you can easily import references (information about journal articles, books, etc.) from EndNote, and directly search and import from hundreds of online sources. Automatic searches of PubMed let you discover articles as soon as they are published. Powerful group-based searches, with static, smart, and virtual groups. Live Search lets you further refine searches as you type.” Bookends requires Mac OS X 10.4 or later.