28Jan/104
Forgetful much?
How could I forget to post about this?
It took slightly less than a couple of years since his post on the subject, but Shawn Hargreaves is finally on twitter: ttp://twitter.com/shawnhargreaves
A list of other XNA people on twitter can be found in the above linked thread.
15Dec/091
Shawn Hargreaves Optimize!
You want to get a good boost in performance?
After you profile your code, and see where the problem is, before you go all crazy and change all foreach-es in for-s, use threads, or pack strings in integers, listen to Shawn and see if there isn't a better algorithm you could be using.