I'm not sure if this is a glitch or if it is a concern to either Microsoft or Google. I stumbled upon this fact while creating a Google Doc Spreadsheet using Microsoft Excel. Wanting no one to see my formulae I used Excel protection to lock my cells. Upon uploading it to Google Docs, all protections was stripped from the spreadsheets and my formulae was clearly visible. I can't believe that Microsoft haven't filed a lawsuit against Google for doing this, nor is there any banks or corporations out there making any noise about Excel security issues. I'm just glad that I know now and can add this to the already very long list of Microsoft security issues.