10 ways to promote your website
1. Post newsgroups
2. Press releases
3. Email to VIPs
4. Article submission
5. Reciprocal Links
6. Forum Posting
7. Directory submission
8. Tell everyone with whom you communicate
9. Post ads to free advertising website
10. Blogging

Nice list.

I would also add:
11. Social Bookmarking/networking sites, such as StumbleUpon, Digg, etc
12. Paid advertising
13. Contests, giveaways, etc

Good info. I've just started am having a hard time.....I've done everything on your list except submit articles. Im not getting any hits. I honestly don't think I'm doing this right. If you have any auggestions (exactly ver betum) please let me know!

traffic from stumbleupon is easy to get but it is quite useless. I can easily get 500 uniques to a page from stumble but that traffic would NOT convert to anything - the waste of bandwidth... IMHO

All situations are different... I wouldn't say "useless", but Stumble traffic isn't worth as much as targeted. I do get some conversions and it takes a lot less effort to get the traffic too. Should definitely not be the main marketing plan though.

How much stumbling has to be done to get that many hits?

Musicplace.co.nr

If site is put on the right category, the content is attractive, and you can generate a few thumbs-ups, then you could potentially get to the high 100's within the first 48 hours. This is my experience with a relevant site, the first time I stumbled it (one stumble = answer to your question). I did wait until I had a pretty attractive piece of content before I did this. In my case, my site was a .org where I have a public domain ecology type project, it has no advertisement. But, commercial sites are encouraged by stumbleupon as long as their content is the right kind of content for the category.

diggs is another good place to post the site

You can also add an RSS subscribe button/link in a high profile spot on your site

create a banner exchange for your niche website content and direct overflow traffic to your site. spend all efforts getting your exchange productive. watch visitors and $$ skyrocket. It is relatively easier to get 25-50 high quality + high traffic sites in the exchange than it is to get 2000+ uniques / day