One of the reasons people use one space in front of Homepage: is probably because the developer reference asks the maintainer to make sure it matches the regexp /^ Homepage: [^ ]*$/, "which allows packages.debian.org to parse it correctly.":
http://www.debian.org/doc/developers-reference/ch-best-pkging-practices.en.html#s-bpp-upstream-info -- Leonard -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
