The best way to boost your sales rank is to sell books!
There are other ways too. Some involve cheating though, and this is likely to cost you in the long run.
However, there are other ways of potentially boosting your sales rank without BAD-about-it.
Read on, if you want to get a quick Espresso boost for your very best creations! Read more Boosting Your Satire Book Sales Rank Without Cheating