Hi there, WikiPack hasn't seen an update in years. If you're concerned about it going away, remember that you won't loose any data as it's all safely stored in your Dropbox folder.
I use it daily, so that won't be happening any time soon!
Every time a new version of Rails comes along I plan to rewrite WikiPack, but it never happens. I suppose it's because it Just Works™, so the cost doesn't seem to justify the reward.
I relocated it to cheaper servers in the US so the hosting costs aren't too much of a personal burden and I can just leave it running indefinitely.
cheers