This petition has absolutely no chance of changing Marissa Mayer and David Karp’s minds, but it does show that there is a significant chunk of Tumblr users who are less-than-thrilled with the popular blogging platform’s impending move to Yahoo.

As you’ve probably heard, Yahoo has announced plans to acquire Tumblr for $1.1 billion. And currently, a petition on ipetitions.com to thwart the deal has garnered over 168,000 signatures.

Of course, there are a multitude of gripes that Tumblr users have with the Yahoo purchase. Maybe they think Yahoo is too uncool, and will ruin the awesome Tumblr experience. Maybe they look at Flickr, and foresee Yahoo running Tumblr into the ground. Maybe they’re worried that Yahoo is going to rid Tumblr of all of its porn in an attempt to make it more family friendly. Maybe they’re pissed about the new ads, which are most definitely on their way to Tumblr.

Whatever the reason, plenty of Tumblr users are pissed. Just take a look at the posts on Tumblr with a #yahoo tag. Tumblr users are gif-ing their anger.

“Stop Yahoo! from buying Tumblr!! If this happens, the entire interface will be changed, and millions of users will delete their accounts – me being one of them. Please, please, please sign this to stop this!!” says the petition creator.

Only time will tell if Yahoo does indeed make Tumblr “better, and faster,” as they say they will. Both Yahoo CEO Marissa Mayer and Tumblr CEO David Karp say that Yahoo is going to take a hands-off approach with Tumblr. It’s going to run independently with Karp retained as CEO. Mayer says that Yahoo promises “not to screw it up.”

And about the porn thing? Mayer’s not coming for it, don’t worry.

This petiition isn’t the only sign that many Tumblr users are thinking of abandoning ship. WordPress founder Matt Mullenweg reported a spike in Tumblr defections to his blogging service – 72,000 in the short time following the announcement.