I purchased Krad Miner from the creator for the bounty cost of 50 BTC, and have released it as open source (Apache 2.0 license) on Github. Since the author has other projects using the Krad label, I have renamed it to Tumen Miner. I would currently consider it alpha-quality; I have not run it, merely cleaned it up as best I could.
In the short term, I plan to fund some minor testing and development on it. Longer term, I may start coding on it myself, if I ever find the free time. I welcome donations in the form of bug reports, code pull requests, and BTC to pay the coders.
Merry Christmas, coiners.
The creator took the service down after coming under DOS attacks. He offered to open source the software for a bounty, and eventually brought his offer price down to 50 Bitcoins. The message with the offer was on the kradminer website until a couple of weeks ago, and only recently has the site been inaccessible.