In Finland and in many other countries other than US use semicolon (;) as a list separator and LimeSurvey can only use comma (,) as list separator (US style) for CSV files.
Would be nice to be able to select which list separator to use, because Windows and Excel are so dummy that you can't select the separator when you are saving file from Excel to CSV. You can change the separator by setting it to Windows locale settings, but that affects all programs.

When I make a Survey, I would like to see how many people have answered the survey.

In the menu "List Survey you see the following columns:
"Full responses" > "Partial responses" > "Total responses"

It's handy, but you can't see how much there are left, or how many surveys are untouched.