Why do we think this tweet is a payback for free stay?

Because that is the history of Tori & Dean the grifters and fakers...

Tori Spelling thanks San Diego Zoo for freebies and comps for family

We'll help you de-code this Tori Spelling tweet! 
"I promised you if you comped us for the day, admission, food, toys, shirts, I'd plug your zoo on my twitter!" 

Look who else is getting free swag and tweeting about it: Vanessa Lachey

Vanessa Lachey (nee Minnillo) took to her twitter to thank Procter & Gamble for the free swag they sent her. We're guessing it's her maid that got to use her FAVORITE products, but it's the thought that counts, right? 
Find me one celeb who isn't tweeting about the free crap they are getting, please...

Here's a glimpse into Vanessa's storage area: 

E! Channel pays for Kylie Jenner's lavish Sweet 16 party

We here at Exposarazzi love photo captions. Big or small, when dissected they reveal all sorts of treasures.
Check out how Startraks photo website captions Kylie Jenner's recent Sweet 16 celebration: "E! hosts..."
That means E! pays for Drake to perform, pays for the food, the cake, the venue, costumes, DJ, everything. Despite their wealth and ability to do their own party, the Kardashians get this party for FREE.
In the industry this is known as "swag" or freebies, and no matter how rich someone is, they still want free sh*t, that never goes away.