Yes today social media is booming and my users of that. And Stumbleupon is one of the best site among them. You can use it for your business too.

Yes it is helpful for the business point of view where you can discover and share cool new stuff or products on the Internet..

It may seem your site has to characteristic new information everyday, although it

yeah it can help for promoting ur site.

Yes,stumleupon drives traffic to your website compare to other social networkng websites

stumbleupon really worked out well in promoting my site