It would be really cool to have an article about string handling (in D) on the D website. Something similar to how std.datetime was explained.
There is already an abundance of Unicode information on the web, but I think we need something specific to D and Phobos. If someone is experienced in this field, has the time & effort to do it.. This is a nice start but it doesn't talk about Unicode at all: d-programming-language.org/cppstrings.html