I got this link from Slashdot. To summarise “….But the risks are real enough that responsible engineers should take note: This is not merely an academic threat, systems designed with MD5 now need to take far more care than they would if they were employing an unbroken hashing algorithm, and the problems are only going to get worse.”
Here is the source site. Some good stuff on here. I particularly like using DNS for one-to-many streaming data dissemination, in fact the whole ‘DNS tunneling’ area is very interesting, well worth coming back to I think.