So, this happened today...
I was checking twitter this morning and definitely more than half-jokingly replied to Kelley's tweet. Then I was just eating my breakfast and reading my book and all the sudden I get a text from Avery that's all exclamation points (not a rare occurrence, actually ;)), and then another one saying something like "You have to see what Kelley wrote!"... so I go back on Twitter and see that I inadvertently started a contest. That in itself was a "woah!" moment.
Then all the sudden Kelley is DMing me and I get to email with her and oh btw she'll drop by about 4 pm. Like no big deal, I have NYT bestselling authors at my house all the time, right? Thankfully I've met Kelley a few times before, or else I think I would have been freaking out even more. My Mom was totally fangirling, haha, and she was like "We need a picture to prove Kelley's been to our house!" which is totally dorky, but also fun, and I'm glad she took one. We chatted for a few minutes, and I got Kelley to sign my copy of The Rising, since it was the only one I didn't have signed. All in all, supremely cool.
I guess the moral of the story is you should definitely just tweet random things, because you never know what will happen. The other moral is that Kelley Armstrong is awesome, and is so cool to her readers. I already knew that just from the amount of contests she has, and how she communicates with people on her website and tumblr, but this just proves it even more.