Ros, my problem with the Help index is that I didn't find it on my own. You had to direct me to it. I was wondering if WikiTree had something like that. Now that I know where it is, I will probably use it in some of my searches. But it's actually easier to do a Google search from the general internet, and I sometimes get information from G2G discussions that way too. Plus, every time I search from a search engine WikiTree's documents get put higher on that search engine's list which means people who don't have an account on WikiTree get more exposure to it.
One problem is under the 5 search categories there are 82 sub-categories. And I'm likely to guess wrongly what many of the sub-categories mean. If, for example, I wanted to search out a topic on WikiTree, if I do it from WikiTree I would expect to go to "find" and then "search" under that. That brings me to a search for names, not topics. If I'm dedicated enough to keep searching, I'll eventually find it under "help" and then "help index". But it's easier either to use something else to search with or else give up at this point. I do think it's important to keep the number of sub-categories - they're all helpful. But the sheer number of them is... well, overwhelming.