New Sticky: File extension?

Just a quick idea for a new sticky or to be added to the buyers guide.

For most switchers they are alienated by the normal extensions such as dmg and stix files what does everyone think to doing one with the common extensions and an explanation of what they are such as this

.stix - compressed file simular to a zip archve, can be opend with Stuffit Expander

etc etc

This would make more sense in the Switchers Hangout

yea thats why ive poster it in here, sorry about that if its wrong

good idea, new file extensions can be a pain at first... especially if you're switching from windows...