I have recently started a site. it's not even 5 months old. The site's major content is images. When naming the images, I am using google's adword tool. I am able to see keywords with most and least searches, highest and lowest competition etc etc. But what I'm not sure of is how to choose amontg these keywords, the
- one's with most searches or the one's with least,
- one's with least competition or most
- one's with most approximate cpc or the opposite.
Do these criteria of choosing has to be changed when the site gets popular. Please explain in detail.