Want to help your favourite authors? Always purchase books directly from publishers wherever possible as this directly affects earnings. Of course, I realise in the case of ebooks especially, each person has their personal preference of reader and type of file they wish to use, but many publishers now sell files that are readable in these formats direct from their own sites. Otherwise, buy from other reputable outlets -- this is not only in the best interests of the author and publisher, it is in the customer's interest too; disreputable sites may be collection payment information, are participating in and may even be funding further criminal activity. Do not loan or distribute ebooks. And if you loved a book, tell the world. People will often review something they disliked rather than loved, so if you enjoyed a book the best way to help a writer and their publisher is to review the book. Thank you!