Rental sites are usually the best resources for finding and selecting what you want. They typically have excellent search engines, allowing you to search by title, director, actor, or genre (such as lesbian, heterosexual, or bisexual), and sometimes by studio, such as VCA or Evil Angel. They cater to a smorgasbord of tastes and sexual orientations, and might have suggestions that help turn up tasty selections for you. Then, you make your choice by clicking the "rent" button, at which time the site will drop that item into your virtual shopping cart and allow you to shop for another video. Online renters usually limit how many DVDs you can select—up to three is standard, but some go up to eight—plus a time limit for how long you can hold onto them. Most sites will let you hold your selection video while you shop for up to an hour, but then return the video to the "shelves" so others can shop for it, too. When ready to check out, you set up an account with a required credit card, and pay for your rentals. Each company has a different rental pricing structure; some are per rental, while others have a flat monthly fee. The rentals are shipped to you in discreetly marked packages—these businesses want your return patronage!—and you keep the videos for a set number of days, usually a full week. The rentals arrive typically within a few business days, and include a return envelope with postage. You watch the DVDs as many times as you like, then drop them in the mail when you're done.