When staff members look at new instructables, they make a decision on whether or not an instructable stands out more than others, and therefor deserves to be "featured". Being featured, puts your instructable under "editors picks" in the section you published it to. If your instructable is really good, it may be chosen for display on the home page. If they think its really, really, really good, they'll put it in the emailed newsletter.In case you're still wondering why that's important, then consider why you bother to post an instructable in the first place. You want people to see it, and comment etc, and the MAJOR BONUS of being featured, is that you get awarded with FREE PRO MEMBERSHIP.I hope that helps.