how to submit my site to digg or stumbleupon? what's benefit of it?

Hi. digg & stumbleupon are both social bookmarking sites that help bloggers show appreciation for articles from other bloggers by bookmarking & sharing either while surfing or directly from the respective digg or stumbleupon dashboards. The bookmarking or sharing can be done if the author has provided bookmark buttons under the article or from your bookmark toolbar. Other bloggers also may reciprocate the favor in return. When you are registering at digg or stumbleupon, you will be provided with an option to submit your blog and add some description as well. Hope that will be easier to handle.

Hi Even I am working on these two sites only. Just use add sites option in them and you can easily add your sites. Benefit is that you can get good targeted traffic to your sites and other pages. The more friends/follower you have their means more possibility that your sites shown by more people. More digg you will get for your work more it will be popular and shown to more people. This much I know.

there's plenty of them if you do the research you will find them one by one. If you're already registered to both then you might have seen a SUBMIT button there... I personally use it to post my link so that I'd get some visitors check out my blog. Or if I like stumble upon something interesting and feel I need to share it with other then I digg it or put in my stumble upon. Something that will also remind me about the interesting article I see on the net.