The following is a list of social content and monitoring platforms gathered from a resourceful and recommended book called Your Brand: The Next Media Company by Michael Brito. For anyone entering the tech, Media, or any other digital industry, picking up this book will be extremely useful.
Social Media:
Google+
Foursquare
Tumblr
Content Publishing Platforms:
Sprinklr
hubspot (Check)
expion
raven tools
spredfast
expion
Contact Marketing platforms:
kapost
compendium
Cadence9
Relaborate
Percolate
Skyword
Contently
Ebyline
Video:
Youtube
Vimeo
Ustream
Photo Sharing:
Flickr
Snapfish
Photobucket
Picasa
Smugmug
Music sharing:
itunes
live365
Podcast alley
Presentations and Documents:
Scribd
Slideshare
Splashcast
Brighttalk
Slideboom
Social Bookmarking:
Diigo
Digg (Check)
Reddit (check)
Review and Rating:
Epinions
Yelp
Blogs:
Blogger
Blogspot
Technorati
Social Entertainment:
Come2play
Second life
uGame
Zynga
Definitions sites
Wikipedia
Brittannica Online
Social Commerce:
lulu.com
Cafepress.com
groupon.com
Other :
Rivalmap
Flavors.me