A dot in the file name?

Question

Is it possible to use "." (period) in file names instead of camelcase or dashes, etc. eg:

ico_active.user.png

Will this cause any performance or browser compatibility issues or other flaw?

Thank!

Answer 1

, , . , , URI, ".jpeg", - , /html javascript flash, , .

IIS , URI, , .

Answer 2

. , Unix, , . Windows . .

, . , - .

Answer 3

, . . * " ".

Answer 4

Dot , , , (?) , ​​.