[eropple]

You might be able to. A $5 droplet on DO, configured correctly, should be able to handle a Hacker Newsering. =) The cache plugins for WP are really good these days.

[joezimjs]

I'm using Cloudflare and Quick Cache, but doesn't seem to help enough. The HostGator support guys recommended switching to WP Super Cache.

What's DO?

[syvolt]

DigitalOcean, it's not shared hosting and therefore harder to configure, that being said it's definitely worth it. I've found that even on a low-end VPS you can juice it for more than you could with a high-end shared hosting account.

[user24]

I use WP Super Cache, it's seen me safely through HN frontpages, popular reddit submissions and being linked from xkcd's blog.

[endianswap]

DigitalOcean, a VPS provider.