1. Performed a one-time renaming of several widgets tags and attributes to make them more concise :

Widgets tags renames :
Facebook
 - follow() -> _follow_button()
 - like() -> like_button()
 - send() -> send_button()
Google
 - plus_one() -> plus_one_button()
LiveJournal
  - like() -> like_button()
  - repost() -> _repost_button()
MailRu
  - like() -> like_button()
Pinterest
  - follow() -> follow_button()
  - pinit() -> pin_it_button()
Surfingbird
  - surf() -> surf_button()
Tumblr
  - follow() -> follow_button()
  - share() -> share_button()
Twitter
  - follow() -> follow_button()
  - tweet() -> tweet_button()
Vkontakte
  - like() -> like_button()
  - subscribe() -> subscription()
Yandex
  - like() -> like_button()
  - share() -> share_panel()

Tags attributes renames :
Facebook
  - Facepile : size -> photo_size
  - Follow Button : kids -> kids_mode
  - Like Button : kids -> kids_mode
  - Send Button : kids -> kids_mode
MailRu
  - Faces : show_title -> title, title -> title_text
Pinterest
  - Board : image_width -> image
  - PinIt Button : counter_position -> counter
  - Profile : image_width -> image
Twitter
  - Follow Button : count -> counter, dnt -> suggestions
  - Tweet Button : count_position -> counter_position, dnt -> suggestions
Vkontakte
  - Like Button : page_description -> description, page_image_url -> image, page_title -> title, page_url -> url
Yandex
  - Money Button : payer_address -> ask_payer_address, payer_email -> ask_payer_email, payer_full_name -> ask_payer_full_name, payer_phone -> ask_payer_phone
  - Money Donate Form : description -> description_text, show_description -> description, payer_comment -> ask_payer_comment, payer_comment_hint -> comment_hint, payer_email -> ask_payer_email, payer_full_name -> ask_payer_full_name, payer_phone -> ask_payer_phone
  -  Money Payment Form : payer_address -> ask_payer_address, payer_comment -> ask_payer_comment, payer_email -> ask_payer_email, payer_full_name -> ask_payer_full_name, payer_purpose -> ask_payer_purpose
YouTube
  - Video : private -> private_mode, secure -> secure_mode

2. Updated project documentation