What are the pros (and cons) of using “Sign in with Twitter/Facebook” for a new website?

Posted by Paul D. Waite on Programmers See other posts from Programmers or by Paul D. Waite
Published on 2011-02-10T21:32:05Z Indexed on 2011/03/07 16:17 UTC
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Myself and a friend are looking to launch a little forum site. I’m considering using the “Sign in with Facebook/Twitter” APIs, possibly exclusively (a la e.g. Lanyrd), for user login. I haven’t used either of these before, nor run a site with user logins at all.

What are the pros (and cons) of these APIs? Specifically:

  1. What benefits do I get as a developer from using them? What drawbacks are there?

  2. Do end users actually like/dislike them?

  3. Have you experienced any technical/logistical issues with these APIs specifically?

Here are the pros and cons I’ve got so far:

Pros

  • More convenient for the user (“register” with two clicks, sign in with one)
  • Possibly no need to maintain our own login system

 Cons

  • No control over our login process
  • Exclude Facebook/Twitter users who are worried about us having some sort of access to their accounts
  • Users’ accounts on our site are compromised if their Facebook/Twitter accounts are compromised.
  • And if we don’t maintain our own alternative login system:
    • Dependency on Facebook/Twitter for our login system
    • Exclude non-Facebook/non-Twitter users from our site

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