Each week sees the introduction of new Ajax powered sites. Rather than announcing them one at a time, I thought I’d batch them together on the weekend.

• Halfnote – Ajax notepad with client-side encryption, auto-save, synchronization between multiple computers. Requires Firefox 2 or IE 5+. Note that there are some ways to exploit the ecryption (man in the middle attacks and the host provider inserting Javascript in the stream), so don’t put all of your passwords into this thing.
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• MyESPN Beta – built on top of Prototype and Scriptaculous, this Beta has some nice features. Check out how the layout, image and font sizes change in response to resizing the browser window. Check out the RSSJSON and other modules. If you want to some code reading, here is a good place to start.
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• Bulletin – Indian GEO:
  
  

  GEO (pronunciation GEE-OOH) refers to one’s Geographic location. This geographic location could be one interested in or one lives in. At Bu.llet.in, GEO refers to Org, City, State and Country taken together.

  What does it mean? It’s sort of a news and information posting site that filters by the above criteria. Built on top of a bunch of Javascript frameworks: Prototype, YUI, etc.
  

• PageFlakes 2.0 – newest version of the start page. Looks to be implemented on top of Atlas/.NET. I found it a bit awkward to use. I couldn’t easily my own RSS feeds, for example — the “get feed” didn’t work for me. Maybe I’m just dense.
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• Data Mashups – It’s a portal. It’s a mashup. (The Beta is a little pokey.) Data Mashups is an interesting concept that’s a bit difficult to explain in so short a space. Think of it as infrastructure to combine data sources, business services and UI in a portal. Built on top of YUI. I was successful in getting it to lock up both Firefox 1.5.x and IE6, so maybe a little more testing is in order.

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