This seems like a variant of PBSALTPH, a silly initialism I coined when I found myself ranting about product blogs that don't link to product home pages [1].
Generally speaking, any subdomain or isolated "region" of a product web site should always provide a prominent link back to the product's home page. A good option is to use the product's logo as that link. Using the logo to link to anything other than the product home page is a crime against the gods of user experience.
Generally speaking, any subdomain or isolated "region" of a product web site should always provide a prominent link back to the product's home page. A good option is to use the product's logo as that link. Using the logo to link to anything other than the product home page is a crime against the gods of user experience.
[1] http://tiamat.tsotech.com/pbsaltph