This post is a day earlier than usual. Why? It's Pi Day, which also means it's Grey Matters Blogiversary! It was 4 years ago today that I started Grey Matters.

Here's the very first post. Take a look at the first, second and third blogiversary posts, and you'll get a good idea of just how much this site has grown since the beginning.

In the past year alone, I've added the constantly-updated How Many Xs Can You Name in Y Minutes list, which is far and away the most popular feature of this site. There was also this blogs' Pi-versary (posted when the blog was exactly 3.14159265 years old). The most unusual thing that happened this year, though, would have to be the temporary disappearance of my MemoryEffects list, which was due to a misunderstanding (details available at the link).

Among the new features added in the past year were the Grey Matters Miro Channel, and Werner Miller's Age Square. As a matter of fact, Age Square and my iPhone Knight's Tour proved to be popular entries as iPhone features.

Let's not forget that today is Pi Day, as well. How should you celebrate? Well, you could have a drink with Pi-ice cubes, make a Pi necklace, and even watch the giant Pi drop.

Just earlier this week, House Resolution 224 officially passed the US House of Representatives by a vote of 391 to 10, with 30 abstaining, which officially supported the designation of Pi Day (More details on this act here).

However you celebrate, and, indeed, whatever you celebrate today, make it a great day!