What's the Dealeo with Sneak Peeks?

I've been asked by a few clients why they didn't see a 'sneak peek' of their session on my blog. I love doing sneak peeks but if I get your on-line gallery up within 36 hours (or so) of the session, then I tend not to do a sneak peek of your session since all your images are available for viewing in your gallery. I'm glad I'm getting feedback about the SP's - it's always good to know what clients think. Hope that helps explain the reasoning a bit... :)