Now you need to wory about getting Slashdotted, Farked, Boingboinged, etc. in parallel. :/
I actually got curious lately about what would happen if I got linked from a high-traffic site. From what I can tell, it's at least 60,000-100,000 hits / hr. So you can always use a load-testing package to see if Apache crashes or not. I think it probably depends on what plan you have and how sophisticated your pages are.
Maybe somebody should post about our great experiences with Linode and find out