Applies a Tag to a user for a specified language. If the tag text does not already exist, it is created. The newly created Id is accessible via the returned TagData. 

This method can be accessed through the Tags.asmx file located in:

~/Workarea/webservices/WebServiceAPI/Community/Tags.asmx

[SoapHeader("AuthHeader")]
[SoapHeader("RequestInfoHeader")]
[WebMethod(MessageName = "AddTagToUser with language", Description = "Applies a Tag to a user.  If the tag text does not already exist, it is created.  The newly created Id is accessible via the returned TagData.")]
public TagData AddTagToUser(string tagText, long userId, int languageId);

<SoapHeader("AuthHeader")>
<SoapHeader("RequestInfoHeader")>
<WebMethod(MessageName = "AddTagToUser with language", Description = "Applies a Tag to a user.  If the tag text does not already exist, it is created.  The newly created Id is accessible via the returned TagData.")>
Public Function AddTagToUser(tagText As string, userId As long, languageId As Integer) As TagData