The best replacement for facebook is twitter.

The best alternatives to facebook are rated as following:
★★★★★  twitter
★★★★  myspace
★★  google+
★★  bebo
★★  google
★★  linkedin
★★  xanga
★★  вконтакте
★★  elgg
★★  google +
★  google plus
★  instagram
★  orkut
★  website
★  tumblr
★  friendster
★  connectu
★  facebook
★  blog
  princeton
  whatsapp
  youtube
  email
  twitter users
  myspace which is better
  google ads
  hi5
  snapchat
  twitter poll
  twitter statistics
  real life
  myspace better
  social network
  twitter comparison
  twitter essay
  lamebook
  follow us on twitter
  multiply
  twitter which is better
  facebook for htc sense
  twitter stock
  myspace which was first
  homework
  my space
  fraley
  google traffic
  myspace more popular
  fakebook
  myspace yahoo
  pinterest
  msn
  zynga
  face to face
  gmail
  nexopia
  twitter yahoo answers
  google adwords
  yahoo

Your alternative for facebook is not listed? Suggest!
Speaking about facebook, one probably shouldn't forget about chat.

Other search terms related to facebook and their ratings are:
★★★★★ chat
★★★★★ friends
★★★★ account
★★★★ login
★★★ skype
★★★ tag
★★★ google
★★★ pidgin
★★★ вконтакте
★★ signing up
★★ an account
★★ password
★★ most likes
★★ instagram
★★ yahoo
★★ logging in
★★ twitter
★★ no friends
★ https
★ whatsapp
★ adium
★ ichat
★ google chrome
★ comments
★ timeline
★ joining
★ yahoo account
★ logging
★ registering
★ yahoo mail
our name
news feed
gmail account
myspace
iphoto
video call
You have in mind a companion for facebook and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of facebook in all years. Click on graph for more.
facebook
twitter
myspace