Finland recently made the news for its decision to shift away from a focus on handwriting. Beginning in 2016 students will not be required tl learn cursive handwriting and instead will be taught typing skills. If this was anywhere other tan Finland the decision might be ignored or ridiculed but the Finnish Education systems reputation for producing quality learning backed by innovative practice makes this hard to ignore.
A useful addition game where users 'handwrite' the answers in the box. The intro page is in Japanese, but the activity is in English.
http://ictmagic.wikispaces.com/Maths
"Transliteracy
* Working Definition
Transliteracy is the ability to read, write and interact across a range of platforms, tools and media from signing and orality through handwriting, print, TV, radio and film, to digital social networks."
Albeit, there isn't any guarantee it will be able to decipher all users' scratches - but it's definitely going to be a nifty tool for the old-fashioned note-takers.