Yup they are both functional. I only use socialmarker.com (nice and fast submissions once you have registered with each site first) haven't heard too much about pigg.us so can't help you out there..
yeah socialmarker is really good because it lets you submit to like 40+ social media sites (some of the biggest ones too) in just about 15 minutes instead of having to submit them all manually to each social media site.. kind of works similar to a robo form filler.. it's not perfect but it does save time once you register with each site initially. KG: Montreal... good and bad. I'm from Toronto.. go leafs GO!!!