VLFs

I was doing some research and found the following code that is supposed to bring the VLFs(virtual log file)in the log file down. Was wondering if this is the correct approach? I have read Kimberly's article on VLFs but it doesn't talk about how to reduce the number of VLFs. Can someone please advice?

DBCC SHRINKFILE(database_log,TRUNCATEONLY)
GO
ALTER DATABASE databasename
MODIFY FILE
(NAME = database_log,SIZE = 100 MB)
GO