Something that turned up since publication of my book is that there's a massive bug in Honeycomb in that it simply refuses to allow query strings or # names to be passed to a webview in a URL.
This is worth bearing in mind if you, for example, have many web pages in an app and like to use the query string to pass information to them. Now you can't and will have to use another approach such as creating multiple pages and calling the right one up according to the parameter you wish to pass. The community is up in arms about it, including people like the developers of Phone Gap.
And even when this is fixed there will be many devices remaining with the broken version so, sadly, it will be some years before we can all start using the query string again on Android webviews.