It would be so great if you could do it right inside InDesign, Photoshop or Illustrator without using a browser. Thankfully, you can with this nifty plugin.
iStockPhoto has released the iStockPhoto Plugin for InDesign, Photoshop and Illustrator that adds a Panel to all three apps which allows you to search for images, view the images, create and view light boxes, and place a comp image directly into your file, and purchase the image – all without ever leaving the Adobe application.
Installation is simple, as the plugin is installed for all three apps via the Adobe Extension Manager. The plugin is free. You can search for images and add comp images to your layout, but you must have an iStockPhoto account to use lightboxes and purchase images.