There's no question that the browse host feature worked some of the the time. Because you see the same host uploading from you multiple times in no way indicates, however, that they are using browse host. It's more likely that they're, well, just downloading multiple files from you.

That said, we have implemented browse host in such a way that will work far better than our previous implementation, and it will be released quite soon. We have also discussed the protocol for with with all other gnutella developers, so it will likely be implemented throughout the gnutella network.