What is the best marketing growth hack that you actually used and saw results?

Here is one of my all time favorites... Writing Pillar Statistics Posts to Get Loads of Quality Passive Backlinks I have used a pretty simple formula to get over a 1000 unique referring domain backlinks every year. Step 1 Find the keyword statistic phrases in your niche that have a search volume of 50+. For example, if you had a dog blog or website, then some of the phrases would be; dog bite statistics, dog owner statistics, service dog statistics. Step 2 Look at the first two pages of Google results and identify the post with the most statistics by looking at the titles. If the highest number is "37 Dog Bite Statistics," then your post title would take it a notch higher with "50 Eye Opening Dog Bite Statistics." Step 3 Compile a great blog post with a list of 50 stats and organize them for easy scanning. Every time a news reporter has a story about a dog attack, they go straight to Google looking for some stats to include in their article. They typically click on the Google result with the highest number in the title. After they grab a stat or two from your post, they link the stat on their article back to your post. What's your best growth hack?