Table 1.

The content comparison of the 2 voluntary counseling and testing models.

Process	Traditional VCTa model	Social networking VCT model
The client mobilization and recruitment strategies	The screening information is announced through a public website of a municipal hospital every day during the research period Subjects pass and see the outreach station Referral by their networks	In GSNb apps: (1) reloading the user location information in the apps, namely, Grindr, Hornet, and Jack’d, once every 2 hours, a total of 4 times a day during 10 AM to noon and 1:30 PM to 7:30 PM on weekdays to display our mobile HIV testing heading and profile for nearby web-based users, and (2) providing one-on-one web-based discussions Create a Facebook fun page and an ID in a messenger app (Line app) to provide the one-on-one private message discussion Encourage the participants who had finished the mobile HIV testing to refer their social network through the Line app
Time of VCT	6 PM to 10 PM every Friday and Saturday	Designated by the participants during 10 AM to noon and 1:30 PM to 7:30 PM every weekday
Location of VCT	An outreach screening station at an entrance of the largest gay village in Taipei City	Designated by the participants at a convenient place in Taipei and New Taipei City
Testing appointment	No need to make an appointment	Need to make an appointment
Testing method	Rapid HIV test		Rapid HIV test
Staff	A trained research assistant		A trained research assistant
Result notification	Informed of the HIV testing result immediately after the test		Informed of the HIV testing result immediately after the test
Posttest services	The referring of confirm test and PEPc and PrEPd can be arranged directly according to the testing result		The referring of confirm test and PEP and PrEP can be arranged directly according to the testing result

^aVCT: voluntary counseling and testing.

^bGSN: geosocial network.

^cPEP: postexposure prophylaxis.

^dPrEP: pre-exposure prophylaxis.