(Site owner here)
Sorry that the site is down, it's hard to deal with spikes of traffic like this without over provisioning!
Just thought I would chime in, I'm working hard on a complete re-write of ASCIIFlow, killing GWT and moving to canvas + JS while keeping the ASCII look and feel, adding tools to resize things, and making the canvas size infinite and most importantly, supporting mobile!
Thanks for the great tool! By the way, is there a chance you would consider setting up a custom copy of ditaa on your server? The ditaa.org server seems dead quite long already (some year at least, I think? or is it just me?), unfortunately... Also, I'm kinda working on a Go port of ditaa (https://github.com/akavel/ditaa), but it's totally work in progress still, and just one of many hobby projects I push forward only from time to time...
(random user posted the link here) While writing text file design doc I was looking for a way to create boxes and stuffs like and came across your cool site. Just want to share & bookmark it via HN. Sorry for the unexpected traffic :D Thanks for this project !