Facebook’s Like Button Celebrates Its First Birthday

Exactly one year after its launch, the Facebook Like button has become ubiquitous across the web and is still installed on thousands of new websites every day.

Facebook first introduced the Like button at its F8 developer’s conference, along with Facebook Open Graph and instant personalization. Through the “Like,” Facebook spread its social footprint across the web; 50,000 websites installed the Like button in its first week, and that number rose to 100,000 in less than a month.

That number hasn’t stopped rising since. Facebook said Thursday that 10,000+ websites add the Like Button every day — identical to what COO Sheryl Sandberg said in October last year. In other words, the growth of the Like button hasn’t slowed down in the past six months. The social network says more than 2.5 million websites have integrated with Facebook so far, including more than 80% of the top 100 websites in the U.S.

Facebook’s success hasn’t gone without notice. Google recently launched +1, its answer to Facebook’s Like button, and a study last month by Eventbrite concluded that a “Like” is more profitable than a tweet.

What do you think of the Like button? How has it changed your habits on the web? Let us know in the comments.