I don’t use it anymore, but I thought I’d make mention of a great Firefox add-on that has done wonders for me in the past. For submission of my own sites, or even submissions I was doing for other people, Shareaholic eased up my workload a TON.

Shareaholic lets you quickly submit to del.icio.us, digg, facebook, google bookmarks, ma.gnolia, reddit, stumbleupon, truemors, and twitter with a simple click. Another feature allows you to e-mail the page directly to a contact.

(Shareaholic also works on the social networking browser, Flock.)