Two recent cases come to mind:
1. Noel B. v. Anna Maria A., Docket No. F-00787-13/14B (N.Y. Fam. Ct. Sept. 12, 2014).
2. Baidoo v. Blood-Dzraku, 5 N.Y.S.3d 709 (Sup. Ct. N.Y. Co. 2015).
Both cases deal with the issue of substituted service under CPLR 308 (5).
In Noel B, the Petitioner filed an action seeking to modify the order of child support based on the alleged emancipation of the sole subject child. The court noted:
"The court finds that service under CPLR § 308 (1,2 and 4) are impracticable. The Petitioner has made diligent efforts to locate the Respondent, but has been unable to obtain an address where service can be made.
While this court is not aware of any published decision wherein a New York state court has authorized service of process by means of social media, other jurisdictions have allowed such service. See Whoshere, Inc. v. Orun, 2014 WL 670817 (E.D. Va.), Federal Trade Commission v. PCCare247 Inc., 2013 WL 841037 (S.D.N.Y.). The court notes that in both those matters service via Facebook was directed to be made in connection with other means of service.