There are logical reasons to refrain from submitting your own content on social network sites.
If we take StumbleUpon as example, we will see that letting others submit your content is a much better way of promotion.
But how do you know if your site is reviewed?
Yahoo! provide plugs that you can hook into Yahoo! search pages without installation and do more with search results.
For instance, if a story from Digg appears in Yahoo search results, you can know the number of diggs that story received from the Yahoo page itself. Similarly you can integrate Yahoo with StumbleUpon to know the average SU rating of any website that turns up in Yahoo!.
these is an example of wikipedia.org in Yahoo search results:
Login to Yahoo! and add some plugins from the Search Gallery.
If your site is indexed by Yahoo, with the StumbleUpon plugin activated, you can list all your pages and discover the reviews received on StumbleUpon.
For example performing the query "dettox site:dettox.blogspot.com", all my pages are listed with the relative StumbleUpon counter.
Change the query according to your needs and limit search results within a site or domain with the parameter "site:YOURDOMAIN".