Cementhorizon is turning five years old this month, and we're celebrating. According to Leisa Oesterreich, M.S.:

Five-year-olds are cheerful, energetic, and enthusiastic. They enjoy planning, and spend a great deal of time discussing who will do what. They especially enjoy dramatic play, usually with other children. Five-year-olds are more sensitive to the needs and feelings of others around them. It is less difficult for them to wait for a turn or to share toys and material. "Best friends" become very important.

Because "best friends" are so important, Zembla would like to invite its best friends, the readers, to the Cementhorizon Fifth Birthday Celebration, taking place on February 24th. Here's the details:

WHEN: Saturday, February 24th, at 8 PM.

WHERE: San Francisco. Email to rsvp-at-cementhorizon-dot-com to, um, RSVP and get the location.

WHAT TO BRING: Yourself and snacks. Officially, we are not providing food or refreshments, because five-year-olds are reluctant to share. However, there will be jello shots and a chocolate fountain at the very least. Also, room temperature water and hard tack biscuits.

So if you've ever wanted to party with bloggers, and the staff behind Zembla in particular, come celebrate our fifth birthday with us. I leave you with a list of Dr. Oesterreich's qualities of of five-year-olds that are shared by Cementhorizon:

• still confuses fantasy with reality sometimes
• often fears loud noises, the dark, animals, and some people
• uses swear words or "bathroom words" to get attention
• likes to argue and reason; use words like "because"
• seeks adult approval
• sometimes critical of other children and embarrassed by own mistakes
• has a good sense of humor, and enjoys sharing jokes and laughter with adults