Szoter – Online Annotation Tool
http://szoter.com/

Features for this online annotation tool include: a) load your picture; b) take a screenshot; c) or capture an image; d) then annotate; e) add text; and f) save to disk. Available by launching the szoter online or obtaining desktop (AIR) version. This has been added to the tools section of Research Resources Subject Tracer™ Information Blog.