Find users

https://api.foursquare.com/v2/users/search
Helps a user locate friends.
HTTP MethodGET or POST
Requires Acting UserYes (learn more)
Parameters
All parameters are optional, unless otherwise indicated.
phone91712344567,123450A comma-delimited list of phone numbers to look for.
emailfoo@bar.com,alice@baz.comA comma-delimited list of email addresses to look for.
twitterdens,sesamestreetA comma-delimited list of Twitter handles to look for.
twitterSourcekraveA single Twitter handle. Results will be users that this handle follows on Twitter who use Foursquare.
fbid123,456A comma-delimited list of Facebook ID's to look for.
nameFred FredricksonA single string to search for in users' names.
Response fields
resultsAn array of compact user objects with Twitter or Facebook information and friend status.
unmatchedAn array of unmatched search terms grouped into subarrays corresponding to the term's parameter.

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