Brightkite

Source.

• checked in
• posted a text message
• posted a photo

Flickr

Source.

• posted a comment
• added a note
• added as a favorite
• marked as a contact (unilateral)
• added a tag

Get Satisfaction

Example.

• started following
• made a comment
• replied to a (problem|idea|suggestion)
• shared an idea
• asked a question
• marked reply as useful

LinkedIn

Source. Example.

• is now connected with (bilateral)
• joined the group
• recommends
• (status update)
• has a new profile photo
• has an updated profile

Windows Live (Microsoft)

Example feed.

Documentation exists somewhere; see also: blog entry series on "What's New" update types at http://bit.ly/aboutwn

• WL blogs
  • added a blog entry
  • commented on someone else's blog entry
  • commented on thier own blog entry
• WL photos
  • added photo(s) to an album
  • commented on a photo
  • tagged someone in a photo
  • was tagged by someone in a photo
  • tagged themselves in a photo
• WL documents (SkyDrive)
  • shared a file (singular)
  • shared files (plural)
  • commented on a file
• WL shared favorites
  • shared a favorite
  • commented on a favorite
• WL lists
  • added a book to a list
  • added a song to a list
  • added a movie to a list
  • added an item to a list
• WL favorite things
  • added a book to favorite books
  • added an artist to favorite music
  • added a movie to favorite movies
• // TO DO: Finish updating
• updated status
• posted a note on someone's profile

Boxee

Source.

Needs documentation. --Chris

OpenSocial

Docs.

Needs documentation. --Chris

EveryBlock

Example.

Needs documentation. --Chris

Ma.gnolia

Example. Blog post.

• marked (bookmarked)
• added [bookmark] to group
• started following (unilateral)

iLike

Example.

Needs documentation. --Chris

TripIt

Example. Screenshot. Documentation.

• You have made new Connections (relationship)
• You are planning a new trip, just returning from a trip or about to leave on a trip
• [Actor] is planning a trip to [Location].
• [Actor]  is returning from a trip to [Location].
• [Actor] installed the [TripIt Application in LinkedIn].
• [Actor] made changes to [Trip Name].
• [Actor] is about to leave on a trip to [Location].

Facebook

• wrote on [person]'s wall
• commented on [person]'s [photo|status]
• commented on [his|her|their] own [photo|status]
• changed [his|her|their] profile picture
• was tagged in the album [album]
• [is?] [status]
• is attending [event]
• and [person] are now friends [via the People You May Know tool?] (bilateral)
• joined the group [group]
• Installed an application:

  

... and various application-specific terms from third parties.

Beacon verbs (the list of verbs originally used with Beacon)

• buy: User bought thing on website.
• wish_list: User added thing to their wishlist on website.
• queue: User added thing to their queue on website.
• sign_up: User signed up for thing on website.
• bid: User bid on thing on website.
• review: User reviewed thing on website.
• add: User added thing on website.
• book: User booked thing on website.
• comment: User commented on thing on website.
• create: User created thing on website.
• design: User designed thing at website.
• download: User downloaded thing from website.
• find: User found thing on website.
• fly: User flew to thing with website.
• get: User got thing on website.
• join: User joined thing on website.
• play: User played thing on website.
• rate: User rated thing on website.
• rent: User rented thing at website.
• shop: User shopped for thing on website.
• stay: User stayed at thing with website.
• subscribe: User subscribed to thing on website.
• support: User supported thing with website.
• update: User updated thing at website.
• view: User viewed thing on website.
• vote: User voted for thing on website.
• watch: User watched thing at website.
• enjoy: User enjoyed thing at website.
• order: User ordered thing at website.
• list: User listed thing on website.

last.fm

Example.

User:

• and [user] are now friends (bilateral)
• loved [artist] - [track]
• left [artist|track|user] a shout
• tagged [artist|track] with [tag]
• left a deleted group
• is attending [event]
• updated [his|her|their] profile

Artist:

• [user] uploaded [image] to [artist]'s images
• [user] added [artist] to their library
• [user] tagged [artist] with ‘[tag]’

Flux

Source.

•  /feeds/people/0{user_ucid}/activity/‐/{event_type}/…/{event_type}/?start‐index={startIndex}&max‐results={maxResults}
• {user_ucid} is mandatory and it should follow ‘0’.
• {event_type} – an optional parameter, can be specified multiple times; used to filter the returned data; can take the following values 
• • CreatedContent
  • CommentedOnContent
  • AddedContentToFeed
  • RatedGainRatingContent
  • RatedFiveStarContent
  • RatedThumbContent
  • GuestBookEntry
  • UpdatedProfile
  • JoinedCommunity
  • AddedFriend
  • ChangedPhoto
  • SharedContent
  • SharedContentOnExternalCommunity
  • SharedContentOnEmail

Default event types are:

• AddedFriend 
• ChangedPhoto 
• CommentedOnContent 
• CreatedContent 
• GuestBookEntry 
• JoinedCommunity 
• UpdatedProfile 
• RatedGainRatingContent 
• RatedFiveStarContent
• RatedThumbContent.