Wow! I just tried Pyromancers and it makes some pretty neat maps but the only downside was not being able to save it so you could work on it later. Loading the images takes a bit of time too but everything else is really great.
There is no limit, what might be happening is your browser is caching the old image. Clear your browser's cache and / or reload and you should see it. Below is the image I see, is that correct?
Maps & Mapping For Role-Playing Games (Hover)
That's the correct one. I tried refreshing multiple times yesterday, to no avail. It works now.
I did have a look at the Pyromancers tool and it's quite good, but it seems quite a bulky piece of software to run only online.
This may see old fashion but an easier way might be to take a graph book and a dark pen and draw it out just as you want it to look. Then get a really good camera or scanner and upload it. Fancy stuff is nice but if its just a dungeon I think the most players want to know is where they're going more than how it looks to the eyes.
Just checking in to see if there has been any progress towards a mapping system for this community as yet?