Sorry, but I don't really get the question - why 'without seo'..? Do you actually actively want to avoid to be listed on search engines? Or do you just want to avoid the extra work/cost/effort?
update your site regularly , try post in the content that has less competition and think yourself a google searcher and use the words will writing.
you certanly can! but it is expensive, that is why people concetrate on SEO and link building. otherwise using PPC programs such as adwords social bookmarking such as digg and stumbleupon can give you traffic, most of them is rubbish and it is also "some kind of SEO, because it is giving you a backlink my suggestion is doing bum marketing if do not know what that is, do a google search or dpforum seach and you will get all the information you need good luck
UNLESS you have something ultra interesting, got indexed by google and people like it, spread around and go viral
Adsense doesn't generally like traffic that's paid for but hey, everyone does it SEO is the best, but you can opt for a few link exchanges and try a bit for banner advertising.
Use Yahooo paid services and google adwords to get insitnat traffice to your site but those will cost you
Place the website link in your DP signature, in your Facebook/MySpace profile, and comment on blogs (NO SPAMMING).
Perfect. some content scrapers like qarchive and other blog copy-sites should read this formula. WP-Unifier users are ruining good world of internet.