In post names/tags/etc since the names of these are written as folder names to the file system, illegal folder characters (such as periods) need to be stripped out since this will cause issues down the line during some operations that require mapping paths.

We currently strip invalid characters in the parser. I believe period doesn't cause any issues. What other invalid characters are you referring to?

Jayme 

The period causes an issue on my system if it is a trailing period (i.e. its the last character of the title). I'm guessing this has something to do with the folder being created with a period at the end, though I'm not 100% sure.

Graffiti should be stripping the last period off for you - let me know if this is not the case.

Jayme