In this sample chapter from his recently released book (co-Authored with Paul Glavich) Chris Farrell gives us a fast overview of performance profiling, memory profiling, profiling tools, and in fact everything we need to know when it comes to profiling our applications. This is a great first step, and The Complete Guide to .NET Performance Testing and Optimization is crammed with even more indispensable knowledge.

The focus of Microsoft’s latest ASP.NET 4has mainly been on improving the performance and Search-engine Optimization (SEO). In this article, I'll be taking a look at what I think are the most important new features in ASP.NET 4.
- Output cache extensibility
- Session state compression
- View state mode for individual control
- Page.MetaKeyword and Page.MetaDescription properties
- Response.RedirectPermanent method
- Routing in ASP.NET
- Increase the URL character length
- New syntax for Html Encode
- Predictable Client IDs
- Web.config file refactoring
- Auto-Start ASP.NET applications
- Improvements on Microsoft Ajax Library

When building a website it is common to expose an RSS/ATOM feed for your content. Feeds serve two main purposes. The first, is that it allows other sites to consume your content for syndication. For example if you write .NET articles, there may be other partner sites that subscribe to your feed and dynamically pull in your content.  Secondly, feeds allow users to subscribe to your site so they can get notifications when your content is updated. This is especially relevant for sites with irregular content updates such as a personal blog.
In the .NET 3.5 framework there is a namespace titled System.ServiceModel.Syndication which very few people seem to know about. The classes contained in this library allows you to create and consume RSS feeds with minimal effort. I recently created a feed for my WeBlog application. I was astonished about how little time it took to implement an RSS Feed. Instead of weighing you down with all the details…I'll let the code do the talking:

1. Pin variables when debugging
2. Box selection
3. Search on-the-fly
4. Zooming
5. View Call Hierarchy
6. Sequence Diagrams
7. Dependency Graphs
8. IntelliTrace and Dump Debugging
9. Multi-monitor support
10. Intellisense – lots of small improvements

The ultimate list of Twitter tools and Twitter applications.
This is the biggest list of Twitter related apps on the internet. Over 760 Twitter tools!