Some Useful resources for ArcGIS and Flex

Recently I got chance to work on a map system design and I am very glad that I can adopt flex for
Arcgis server for the system development. Here r some links I think I need later on to browse to to
get more idea. Hope these would also be helpful to you.

ArcGIS Server Flex API Click here

ESRI System design strategies which was just out this year, April maybe? Anyway, "Every time they have updated the document continously with different updates. This is one of the best document /reference guide for ESRI developers. Any performance issue or network issue or security issue first document to refer is SDS. I suggest to all ESRI developers to have a look on this before starting any project. This is handy document during design phase of any GIS application development project"
http://www.wiki.gis.com/wiki/index.php/System_Design_Strategies

This will give you a lot of thinking and idea on what's been reflected to ESRI.
http://ideas.arcgis.com/

Building Rich Internet Applications with the ArcGIS API for Flex
While no need to mension anything here, from the name you can know what's it for. It's actually presented on ESRI Federal User Conference. Very helpful for you to convince any customer to switch to flex combined with ArcGIS.

Here are some cool websites as I collected:

http://photomapperserver.alta4gis.de
ArcGIS Server Flex API
ArcGIS Server 9.3.1
http://www.adaptationatlas.org ArcGIS Server Flex API
ArcGIS Server 9.3.1

City of Boston: One of first Flex based site and sets trend setter for all the developers
Click Here and also check Here

http://www.adaptationatlas.org/map.cfm

To be continued.