A few days ago, this site was off-line, with the domain for sale.
Now, it was recovered by the rightful owner, so all is well. But, it is a good reminder that you can’t guarantee that a given site will be there tomorrow.
So if you like the material and want to keep it, there are a couple of site copiers out there.
Even better: if you have your own ideas on expanding Traveller, why not raise up your own site? Get your ideas and thoughts out there, maybe a few posts a week, and if people like what you do they’ll let you know!