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I got Picnik photo editor while searching for Faststone screencapture software. Both these utilities are very useful for a blog publisher. Both Picnik and Faststone are free for use.

Faststone is a screen capture software with ease of use, short cut keys, output in desirable format ie BMP,JPEG,TIFF,GIF,PCX,PNG,TGA and PDF formats.

FEATURES as described by Publisher
# A small handy Capture Panel that provides quick access to its capture tools and output options
# Global hotkeys to activate screen capturing instantly
# Capture windows, objects, menus, full screen, rectangular/freehand regions and scrolling windows/web pages
# Capture multiple windows and objects including multi-level menus
# Options to specify output destination (internal editor, clipboard, file, printer …)
# Draw annotation objects such as texts, arrowed lines, highlights, watermarks, rectangles and circles
# Apply effects such as drop-shadow, frame, torn-edge and fade-edge
# Add image caption
# Resize, crop, rotate, sharpen, brighten, adjust colors …
# Undo/Redo
# Support external editors
# Save in BMP, GIF, JPEG, PCX, PNG, TGA, TIFF and PDF formats
# Send captured images by email
# Send captured images to Word and PowerPoint documents
# Send captured images to a Web (FTP) server
# Record screen activities and sound into video files
# Screen Color Picker
# Screen Magnifier
# Screen Ruler
# Support multiple monitors
# Run when Windows starts (optional)
# Minimize to System Tray area
#Small footprint in memory

I have started using Faststone, I am satisfied with the results, but the trial period finishes in 1 month.Enjoy this free software.