TITLE: Webpages for specialized communities
QUESTION [30 upvotes]: First, my apology for this soft question. My excuse was that I really think this may be of interest to the community. I would understand if it gets closed (I have advocated closing some soft questions myself, so it's fair).  
Background/Motivation: Recently at an AMS meeting I decided to attend a special session outside my interests and had a lot of fun. Also, to learn about what is going on in a different but related area, I found it  very useful to look at some recent conferences and start by  skimming the list of speakers and abstracts/notes. So a website with recent and upcoming conferences would be useful. They are not always easy to find with Google. 
Requirements: Since this is soft, let's take some care to make sure it will not be too easy to answer. So let's define "specialized community" to be "there is at least one AMS special session devoted to (part of) it. Also, the more useful the website is the better (for example, one should preferably contains list of conferences, and perhaps more) 
Examples: here is one I visit frequently: for commutative algebra 
Another one I found recently and like a lot: Finite dimensional algebras

Surely there must be others?

REPLY [2 votes]: A few more for Logic:
Mathematical Logic Around the World contains a lot of useful information about Logic departments, Logic journals, LaTeX for Logicians etc. The events section is a little outdated though.
The European Set Theory Society has conference announcements as well as slides from the conferences.
There is also the Young Set Theory Network, which has conference announcements, and hopefully will have more things in the future.