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This post has been upvoted by witness @untersatz. You've done a great job!
The @untersatz witness and manual curation is under the guidance of @contrabourdon and @organduo.
Current VP: 88.77%

On my blog I tried both WP Super Cache and W3 Total Cache, and probably one or two others too. But they never stayed up for long. This is somebody else's blog and it has W3TC.

I used CloudFlare on my site. For a while it was ok, but from some point forward it actually slowed my site down and I gave up on it.

Understood. I ended up dumping caching plugins and just opted for faster hosting instead.