One addition, if you don't care about comments, or use something like disqus, you can put varnish in front of WP and it will just work. A simpler solution, don't use wordpress, use some kind of static blog generator. It's really easy to host static files!
of course, it's not the right fit for everyone, but there sure is a lot of upside to it which needs to be seriously considered. Hosting WP is a giant pain in the ass.
One addition, if you don't care about comments, or use something like disqus, you can put varnish in front of WP and it will just work. A simpler solution, don't use wordpress, use some kind of static blog generator. It's really easy to host static files!