Guess I'll start.
Since last month, I published two EA-themed blogs for The Life You Can Save. "The Valentine’s Day Gift That Saves Lives" describes how my wife and I started a new family tradition of giving each other donations to charities for Valentine's Day. "How a Calculator Helped Me Multiply My Giving" talks about the Impact Calculator, a tool created by The Life You Can Save to calculate the actual impact of your donations to effective charities.
I plan to post these blogs to Intentional Insights and also submit them to The Huffington Post. More excitingly, a version of "The Valentine’s Day Gift That Saves Lives" was accepted for publication to the 16th largest newspaper in the US, with a paper readership of over 400,000 for its Sunday edition, the only one that has op-eds, and over 5,000,000 monthly website visitors.
As President of Intentional Insights, I've also been in talks with the American Humanist Association to consider spreading Giving Games to their members, as part of a broader project with The Life You Can Save to spread EA-themed effective giving to reason-oriented communities. The AHA is pretty interested in this project, and will likely host a Giving Game for their staff, which is a great sign that they will spread it to their groups.
On a personal note, I'm also looking forward to Valentine's Day myself, and giving donations to effective charities on my wife's behalf, per our Valentine's Day tradition. Not saying here which charity I've picked, since she may read this post, and it's supposed to be a surprise :-)
In January the only EA activities I engaged in were Skyping with Gleb about possible volunteer work I could do for InIn and offering him some feedback on an article or two.
I also wrote down two EA-related ideas that have been on my mind in two blog posts, although it's not clear to me that doing this actually did any good.
Tonight I completed about half of my Centre for Effective Altruism Pareto Fellowship application.
Good luck with the Pareto Fellowship!
Interesting ideas in your blog posts. For reducing existential risk in the short, medium, and long term, I personally see promoting rationality and EA as the most effective means to do so. I liked this recent piece here on how expanding our society's circles of compassion can be particularly helpful. For the universes, I would create only ones where suffering is outweighed by pleasure.