* Facebook
**Private or public? If private, sandboxed, or test accounts?
**Test with "Secure browsing (https)" on https://www.facebook.com/editaccount.php?ref=mb&drop enabled and disabled
* Twitter
* ** Length of pre-populated tweets in en-USand other locales (l10n)
** Unescaped vs. escaped characters (string literals)
** Unicode chars
* ShareThis, etc.