Actually, you could get around the delayed posts thing. With Webby, you can specify which posts are indexed. It'd be easy to make it only publish posts if they'

Actually, you could get around the delayed posts thing. With Webby, you can specify which posts are indexed. It'd be easy to make it only publish posts if they're in the past rather than in the future (via the post date field or some other custom field). Then just run the generator automatically every hour from a cron job somewhere and you've got delayed posts. Also, as far as I know, disqus supports trackbacks (not sure what the difference is between that and pingbacks though). Finally, re: speed, if you get slashdotted, WPCache will still struggle. Nginx serving static files, otoh, won't even skip a beat at 100 hits a second, even on a very small VM.