Definition of Rating System:
The amount of time in minutes that it generally takes per week to maintain a participatory media platform, given basic computer literacy and a midrange Internet connection.

Includes:
Includes time to implement regular updates; time to compose text and/or produce very basic multimedia such as photographic images and video (3 minute length, minimal editing); and, time to respond to interactive media (such as blogs).

Excludes:
Excludes the time that is required to become basically proficient the skills necessary to create multimedia; additional time required for very slow Internet connections (some dial-up and poor wireless connection); advanced multimedia production and post-production time; and, system maintenance or site restructuring.

Rating Scale:
T = 1 –14 minutes per week. For example, tagging website pages and sharing them with others through del.icio.us.
TT = 15 – 30 minutes. For example, uploading and labeling your new pictures onto flickr.
TTT = 30 – 89 minutes (.5 - 1.5 hrs.) For example, communicating with your networks of friends and updating your profile on Friendster.
TTTT = 90 - 239 minutes (1.5 - 4 hours) For example, maintaining your blog with text and photos on blogger.
TTTTT = 240 minutes and up (4 hours +) For example, maintaining your videoblog with one new 3 minute video plus descriptive text per week.

Category	PMCA	Rating
Multi-Media Sharing		T - TTTTT
	Flickr.com	T - TT
	YouTube.com	T - TTTTT
	.mac	T - TTTTT
	Veoh.com	T - TTTTT
	Blip.tv	T - TTTTT
Social Networking		T - TTT
	Facebook.com	TT - TTT
	MySpace.com	TT - TTT
	Friendster.com	TT - TTT
	Ning.com	TT - TTT
	Twitter.com	T
Blogging, Vlogging, Vcasting, and Podcasting		TTTT - TTTTT
	Blogger.com	TTTT - TTTTT
	Livejournal.com	TTTT - TTTTT
Wiki		T - TTT
	Wikipedia	T - TTT
	Wetpaint	T - TTT
	PBWiki	T - TTT
	MediaWiki	T - TTT
	Socialtext	T - TTT
Social Bookmarking		T
	del.icio.us	T
	digg.com	T
RSS		T-TT
	web-based	T-TT
	client-based	T-TT
Virtual Worlds		TTTT - TTTTT
	Second Life
	there.com
	Koneva