Right, for example, your email address so they can harass the hell out of you (if you stumble onto the site and see the “FREE SAMPLE PACKS” link). Or the free packs are just partial and they’re supposed to entice you to buy the whole pack (where the actual good samples are). Or the packs lead you to their not-free VSTs (which I’m also not terribly interested in, but I’m not their target for that stuff).