It is a very effective strategy. An organization I referred to, the Iranian Justice Collective.... We've been keeping a database of this. What we've found is that the prisoners who have had sponsorship are actually more likely to be released. I've been doing this human rights work focused on Iran for many years. What former prisoners always tell me is that their situation always improves. Their interrogators treat them a little bit better, and they're more likely to be released when there are well-known western figures—western politicians, celebrities and so on—willing to speak out for them and keep their issues alive.
The Iranian regime ignores a lot of human rights obligations that they have, but they do care a great deal about what's being said about them in the west, so steps like that are incredibly effective. I would urge you and all your colleagues to continue with this really important work.