The natural instinct of many salespeople (especially untrained or inexperienced ones) is to talk about their product, their company, and themselves.
But, especially in an in-home selling situation, it's crucial to talk about the prospects, and to relate to them as human beings first, and prospects second. People love to talk about what's important to them, it's up to the salesperson to find out what's important.
This involves both product/service related issues, but to a large extent non-business issues as well. I've had people show me their train collection, their rooster product collection (plates, placemats, clocks, vases, cups, etc.), their book collection, their doll collection, their kids photos, etc. Why would they show this stuff to a salesperson? Because they love it, and because I allowed them to be comfortable enough to talk to me human being to human being not just prospect to salesperson.
What you call the "meet and greet" I call the "sit-down chit-chat warm-up" but it's not manipulative or sleazy or abusive...it's human.