Make the source code of the website available for download.
You can make the complete website available for download (1) in parts (RAR packages) and (2) complete ISO file via (a) direct resumable download link and (b) BitTorrent.
If the source code were available for download then we could use this website and it's tools offline.
It would be very helpful to others working on similar projects.
Also, if for some reason this website were no longer available one day, then somebody / anybody who has an offline version can just upload it again.
I also just think that it's a good idea to share resources.. in the spirit of letting others benefit even more from your work.. etc