1. Do not promote you Propeller link in other social bookmarking sites like Digg or StumbleUpon but especially in StumbleUpon. I attempted to do it in SU. When I first submitted my article, I had no read and prop. After I waited for more than two hours, I checked my stats again. There was no change in stats and there was nothing to do but a small cheat. I submitted my Propeller link to Stumbleupon. Ten minutes later,I had only three props and more than 200 reads and my rating increased to 5.0. After one hour passed, my rating increased to 7.5 with more than 1500 read and only four props. At the end, my article was in the frontpage. However, in the next two hours, my submission in Propeller was removed then I was completely banned from the system. This was a great experience since I am not cheating anymore.
2. Join the groups but send related contents to them. I was joining every group I saw. As far as I remember, I joined more than 50 groups before my ban. When I submitted an article, I was sending it to all groups and doing this continuously. This might be one of the reasons for my ban. You should send related contents to the groups. Try to become an active user in the gropus.
3. Make a lot of friends. Follow their submissions and prop their articles if you like. You can always follow your friends' submission from the “Friends' submissions“ part.
4. Check it frontpage articles and try to understand their main properties. Try to learn what active propellers want to read about and what they prop.

Every article has only 24 hours to come to the frontpage. After 24 hours, even if your submission has been rated to 10.0, it will not come to the front page. It will stay as a passive submission in Propeller. So, you should be as fast as you do. Otherwise, your article will pass away without seeing the front page.

Here are the top 3 social publishing sites, the most visited ones that can get you the most traffic:

Digg

Digg gets over a million visits per month and it's the best thing for indexing your site fast and getting your content to the public. So, after you publish anything, don't forget to submit it to digg!

StumbleUpon

Discover new sites! That's the motto of StumbleUpon creators. By installing the toolbar, submitting your site you can potentially get over 1000 visitors on your site overnight.

Propeller

Former Netscape, now named Propeller is a site that can get you heaps of visitors. Just submit your site, and the more votes you receive, the more probability there is your site would be viewed by more propeller users.

A person can look at the channels that are off to the right side of the Front Page of Propeller. Find one that interests you and click on it. That will take you to the Front Page for that particular channel. I find many very interesting stories that way.

By Friend

As a long time Netscape and now Propeller user I have a long and varied list of friends that I depend on to help me get the news that needs to be seen. Now, this can be problematic because I have so many friends that going to their individual profiles is a pain. But, Propeller has solved that problem for me by having a very handy place where I can look at my Friend's recently submitted stories. Just go to your personal Friends page. You should see a screen that looks like this:

See the place under the big blue “My Friends” caption? It has “Friends Overview”, “Your Friends Recent Activity” and “Friends Submitted Stories”. Click on that last one and you'll see this:

Now, you have a list of all of the stories submitted by your friends. This is a great way to see what your friends are submitting.

By Private Message

This method works well, but it can grate on the nerves of many users. Personally, I get about forty to fifty messages in my PM box each day and almost all of them are heads up requests on stories. It's fine if it happens once in a while, especially with people that are not on my Friends list, but when it's the same people day after day it gets old very fast. However, this is a good way to see some stories that otherwise you might miss.

Conclusion

Basically, there are several ways to best find the stories that you want to see, but the best way is to have a varied and reliable network of Friends and check in on what they are submitting from time to time with the “Friends Submitted Stories”. Good luck and have fun!!!