I think a 6 month or yearly rotation would be good. If (IF) we make the site dual hatted, we could do one of each up there for the rotation.

I also think that having a more "aggressive" header pic will catch peoples' attention when they click this site after doing a google search. Ya know... it shows what this site is really about... not just a stock XK photo. Might peak interest to keep looking further into the site.

MAYBE even have the header pic be a link to the voting thread... so you can click the header and see what other pics/nominations were in the running.