If all my topics that I've started are deleted. Do I still retain my rank ? Junior , Member , Senior etc... ? ?
If I decide to wipe my profile clean completely, will the rank stay ?

- If you delete all your posts, that means the rank you have, for example, Member in rank and you have 65 total posts, then you delete 35 posts, the remaining 30 posts will be your rank, you will go down to Jr. again. Member.
But those merits that you got intact will not be lost. Then the activity can't be changed, it will only run when you have exceeded the number of your activity as far as I know. Why did you ask?