well, I (gp32news) was hosting it, but during the first hours ou gp32eu, there were more than 10GB of bandwith, which is quite too much for me... but now, files are available somewhere else.
GP32eu is of course unofficial and not run by gp32news' staff
To the end, usually, websites are not asking to developpers if they can host their games/tools/... as they are far too much of them. GP32news, GP32x and GP32spain are hosting hundreds of files, so, what we usually do as webmasters is hosting files with the readme.txt and when it exists, the official url.
Also, many resellers like GBAX are giving a CD full of GP32 free tools without asking you. (VirginPlay is also doing it)
It also protects amateur programs of diseapear. As many GP32 devs left the scene and closed their websites. But, if you don't wan't to see your program on other websites, just say it on your own website or contact the webmasters and they'll do what you want.