correlation is not causation
By the by: Correlating the new del.icio.us JSON URL feed with Google's recent deprecation of the SOAP Search API is about as effective as noticing how often the clock reads 12:34 when you just happen to be looking at it.
Archived Comments
Because ... you say so? :)
Also, I think you misuse the word "correlation".
And I think there is a correlation -- both are indicative of a trend in "web services" today.
JSON and YAML are getting more popular in that arena and XML (especially SOAP) is something that a lot of programmers dislike workign with.