Our forum was moved to a new server. From now on, Isaac – one of our forum admins – will be hosting our forum on his servers.
Isaac wrote:
The forum has been moved back to Isaac’s servers. This was done with only a couple of hours of downtime.
Technically, for now, you will notice that “simutrans.info” is the domain — all requests sent to forum.simutrans.com will be automatically forwarded to simutrans.info – this is what allows us to make the transfer seamless (with the exception of the necessary downtime to copy files and the database, but that was done at a time when activity on the forum was very minimal).
The remaining sites of Simutrans are still on their original servers.
Link:
Our sites hosted on simutrans.com and 
This is a resource intended for the Simutrans community. It’s easy to upload multiple files using the Flash interface, and for each file you get a direct link you can use – for example, you can upload multiple images, copy the direct URLs, and put “[img]” tags around them to post on the forum.