User Portlet User Portlet

Discussions
Actually the required answer is 3. In[12]:= a = {1, 2, {3, 4, {5}}}; Count[a, List, \[Infinity], Heads -> True] Out[13]= 3
I have created a Google Custom search engine and from the site URL Basics tab can get the "Custom search engine ID" by clicking on its tab OK but cannot see how to get the "API key". Help appreciated.
Question regarding MathWorld & Mathematica 10 What is the CURRENT best way of getting downloadable MathWorld notebooks to be usable with MMA10? I have a MathWorld folder from an old MathWorld link for supporting packages loaded in...
Vitaliy, What ever happenned to the Mathematica initiative you mentioned? "We are currently looking into several ways of implementing advanced mathematical notation in the body of posts - including MathJax and embedded Mathematica Online cells."