I'm newbie in community of iron users. I can't find answers to some questions on this forum (and with google too

1. Why source code of iron availible only on rapidshare? Is there any difficulties to host it on github, berlios or sourceforge?
2. Why there is no information in download section to check integrity of downloaded binaries (like md5 hash or something)?
3. What about code/binaries signing?
Thanks in advance for answers.