Best of this Week Summary 28 January - 10 February 2008

• Interesting idea mentioned in this post: the very basic site inursite.com validates your markup daily and you get sent the result via email or RSS. Of course during the building your site should already validate, but this site can help for Continous Integration of your front-end.
  


• Great overview of Javascript/AJAX performance issues in all major browsers (except Opera). You can use this information to know where to focus your Javascript optimizations on.
  


• This week several BIG names joined OpenID: Google, Verisign and IBM.
  


• Google's just released Social Graph API. It tries to find public relationships between people's accounts.