Lego is great and all, but when it comes to buying stuff that isn't readily being produced by Lego things can get a bit tricky. Whether it's buying sets that have been long-discontinued, spare pieces to repair your collection, or pieces to make your own, most people tend to gravitate towards third party marketplaces. Except one of the biggest marketplaces isn't third-party anymore.
If you ask any Lego fan that knows their stuff where you can get extra pieces, Bricklink will likely be the one they bring up first. It has over a million members, and is made up of over 10,000 storefronts in 70 countries, and it's a much more convenient (and often cheaper) option than Lego's own Pick-a-Brick service.
In fact Bricklink has even branched out recently, developing crowd-sourced sets (in collaboration with Lego) made from genuine Lego pieces that fans could buy. So really it's no surprise that the Lego group has bought the site out.
The LEGO Group CEO, Niels B Christiansen said:
“Our adult fans are extremely important to us. They are passionate, committed and endlessly creative. We have worked closely with the community for many years and look forward to deepening our collaboration through BrickLink. We plan to continue to support the active marketplace and evolve BrickLink’s digital studio which allows our talented fans to take their creativity to the next level.”
Here's just hoping Lego's ownership doesn't change Bricklink too much, and it'll still be the place to purchase random Lego bits on the cheap.