That is completely fine. OF course, it's not my picture - I'm too shy ;-) I actually like the Kahane/Chaim blend that YouTube made for my channel logo (they pick some random frames and give you the choice of what you want to be your logo).
I really like the idea of people getting MySpace, Facebook, etc. pages, blogs, YouTube videos, etc. The JTF movement is a lot bigger than people think and the more different people are shown to be involved, the more we show that it's not just Chaim. The ridiculous Wikipedia article says that JTF is a "one-man show" - that's far from the truth. The more we cross-link, the more it means that (a) new people will learn about JTF, and (b) when people do, they'll see that it's a rich, vibrant movement.