As previously reported, Google has acquired social media marketing platform company Wildfire.

Business Insider has brought it to the public’s attention that Wildfire just happens to employ Arielle Zuckerberg (pictured), sister of Facebook Founder and CEO Mark Zuckerberg. That’s pretty interesting, considering that Google and Facebook are direct competitors in a variety of ways.

Arielle has not been shy about criticizing things about Facebook in the past. Here’s a blog post from September in which she pointed out some Facebook changes that she liked and some that she did not. No big deal. Just kind of funny.

Arielle is a product manager at Wildfire. She joined last year. She’s been pretty active on Facebook, but doesn’t appear to have a Google+ account. That is far greater a criticism of Google’s social product, I would think, than anything she’s had to say about Facebook. It will be interesting to see if that changes.

The company says Wildfire will continue to operate as usual, and there will be no changes to its service or customer support.

Image: Arielle Zuckerberg (Facebook)