I've made several web sites over the years in a wide variety of formats. Creating sites from HTML code, using web design programs like Dreamweaver, First Class, and now with the advance of online tools and Read/ Write web anyone and everyone can easily create a web site or a Blog or Wiki. The level of creativity and program choice is truly in the hands of the Creator.
In teaching technology to high school students I think they need to be aware of the various programs as each has different limitations and advancements. And along with the software come lessons in "responsible publishing as an ethical citizen."
For those Student, Teachers and Anyone who wants to publish but is NOT highly technologically inclined you can still create a great looking site without any annoying advertising using either of these sites. A account has to be set up but after that it's all yours. These are WIWIGS (What you see is what you get) they are also easy to update and no uploading is required.
View this instructional video for Google Sites
Steve Hargadon recently posted some information about Weebly.com as a web tool. I think this one is great for those who want a fast easy site in 10 minutes with 20 or so templates to choose from.