Are there any traditional (cheap, shared) web hosting services that have R on the server?
UPDATE: I went with Dreamhost on this one. I first tried to build R on a shared server, but I needed their support staff installed some packages (ex gfortran). After some struggles, I was able to get R built from source with the exception of the x11 headers, which means that graphics couldn't be saved using the png() function. Not a great resuls, so I upgraded to the private server package. Their private server gives you full root access to a Debian server, so installing R was as easy as executing sudo apt-get install r-base-dev
. Still very affordable for a pet project, plus they don't care about long running processes, just memory usage (which is how their private server plan is priced).