Image deletion

Hi, a question asked frequently by my friends, is it better to run a Compact flash card 8gb to the end before formatting or is it OK to format after short periods, 

and does this deteriorate the card and lower the the quality newer photos,

You can format whenever you’d like, but unless there’s a valid reason for doing so, I don’t know why you would want to. They store data randomly so there’s no need to fill it up before formatting. It won’t affect the quality of the files being saved; regardless of what type they are.