Innocent drinks have a blog that they have updated daily since 2006. They use it mostly for PR as it reaffirms their brand identity as a fun and ethical company. They post funny pictures and videos often and also recipes. They encourage interaction with a comments section on each blog post.
Adidas Group have a very good blog which is run by their Cheif Corporate Communications Officer Jan Ranau. The blog has 3 main types of posts business operations, posts by employees and posts about sustainability. It is a very good blog and keeps the public up to date with what the adidas group are doing. It is mainly for PR but also has some marketing elements to it. The sustainability posts add to adidas' ethical brand image.