Russell Beattie Notebook - Is PHP Really More Scalable Than JSP?

"Friendster's switched from JSP to PHP. Specifically, they've moved from Tomcat to a LAMP solution. Is this a good thing? I mean, they're the guys with 9 million members, a large majority bitching about sluggish response times, etc. so they should know, but it seems awfully strange to me."

An interesting discussion in the comments.