Most people who use Digg know about the continual algorthym upgrades. These changes are made to prevent the "gaming" of Digg. i.e. They are meant to prevent people from using Digg as a personal advertising scheme. There still are a few very easy things you can do to "game" the system.
A) The Steve Colbert System
This system may be a little bit hard for the average blogger to pull off as it requires getting a TV show on Comedy Central. This is how you do it:
1) Become an actor
2) Get on a highly rated TV show
3) Get your own spin-off TV show
4) Find out about an obscure bridge contest in Hungary
5) Tell all of your loyal fans to vote for your name!
6) Sit back as your fans do your bidding
OK, I admit that this particular system for gaming Digg was not actually used on Digg... but... it... could... be!
B) Pay off the Diggers
This system involves spending your money.
1) Contact 1,000 Diggers
2) Offer each of them $1.00 to Digg your story
3) After they Digg your story send them the money.
Now, this system could be used once where you never pay up but then all the Diggers you stiffed will mark all of your future submissions as spam and get you banned from Digg.
Is $1 that high of a price to pay?
C) Make 1,000 fake Digg accounts
This is the "cheep man's" version of "Pay off the Diggers" and it involves a lot of time to pull off properly.
1) Every day, make a new Digg account.
2) Every day, use each Digg account for about five minutes and Digg a ton of stories.
3) Every day, use each Digg account to submit one story.
4) After you achieve a "critical mass" of 120 accounts you can begin to use these accounts to Digg your articles, promoting them to the front page instantly!
Now, there are a few things you need to do to properly pull this off. You will need to constantly change your IP, clear your cookies and mix-up the order in which you access your multiple Digg accounts.
You also need to keep the "front paging" of your own articles to a minimum to throw off the scent of the Digg analyzers. I suggest you test this out by Digging something other than your own material first. Something like an entry on this website might be a good idea!
Also, you need to keep adding accounts daily as Digg will figure out what you are doing and start killing some of your accounts.
D) Pay Kevin Rose $150M
If you pay Kevin the $150M he's asking for Digg you can fool around all you want with the front page system! You can put your articles there with only one Digg!
*disclaimer - In case you have not figured it out yet, this is a *joke* article. None of these methods is likely to generate any success for you (except D) if anything the time you waste trying to get these methods to work will cost you more than any benefit you might gain.