Evernote released a substantial Skitch 2.5 update for both OS X and iOS today, which makes the four-month wait since the last Mac update seem worthwhile. The new features are primarily geared toward adding feedback and notes to PDFs, and Evernote Premium members get two of the best ones: PDF Annotation and Skitch Summary. As the name suggests, the former lets you mark up PDFs with text, arrows, shapes and highlighter tools, while the latter collates all the added not
