Open Data Day is an annual observance of international open data. It is a day for groups and communities gather to reach out to new people and build new solutions using open data.
I do a lot of "open source" software and it is a free and accessible distribution methodology.
I have been known to use open source code in my projects.
However, my modifications are not included in the open source data I allow others to see.
There is a problem with sharing data in an open manner as far as I am concerned. A lot of the stuff I have belongs to customers and they would not appreciate it much were I to make their assets obtainable in an open data manner.
Call me selfish, but I remain one who believes you shouldn't tell everything you know.
So "open data" or "open source programs" appears to be the inverse of proprietary which is typically guarded beyond the need, i.e., alot of the proprietary stuff out there, particularly the dotnet microsoft mess — which is IMHO total junk.
When you can write a code segment in 30 lines I feel the need for 500 lines is unnecessary.
So happy International Open Data Day. Share what you will and I hope you are staying away from the stupid microsoft dotnet crap.