From the titles, the articles are self-explanatory, but the emphasis is on performance. The interesting thing about the first article is that it discusses the theory of performance, which people don’t think about enough (e.g., what does it mean to perform well?). The article uses a specific example for which one could easily come up with three different senses of “performance” (the article uses Flex for the code).
The second article has lots of specific, excellent tips, many of which being applicable to any application you develop (although the example also uses Flex for the code, it’s mostly ActionScript).
Even if you’re not using Adobe AIR, I would think these articles would be worth reading, as the subject of application performance is one we could all always continue to learn more about.