Multiple coders and general public might have had a need for an MD5 checksum added to the blender versions download pages.

Last year I committed code for game_engine_publishing.py The add-on automatically downloads blender archives for multiple OS types under the same blender version (e.g.: blender 2.76b for windows, mac and linux on ix86 and x86_64). This enables users to compile their game for multiple platforms with a single button click.

Reason
I found out that if there is a connection drop while downloading archives, we have no way of telling if it's corrupted or not.
This is why I think an MD5 checksum might be of great help.

Solution
Adding a new column called "MD5" or "MD5 checksum" to http://download.blender.org/release/BlenderX.XX/

Example