age of backlinks to your domain, age of your domain, a low bounce rate, number of inner page links are the big 4, then worry about seo'ing your website to tweak your rank.
Telling people what is coming up next on your website will give them a COMPELLING reason to return... aka "bookmark" your website. Be sure to talk about what's... "coming up next!" "Tommorow's Update!" , "next week!" , "next month?" all good words to use ;)
~Ray
www.hardlinks.org