I actually do mention I'll make an extra effort for you if you contribute to OS. I added it after recognizing the name of someone who emailed me, realizing I'd

I actually do mention I'll make an extra effort for you if you contribute to OS. I added it after recognizing the name of someone who emailed me, realizing I'd been using software he wrote for years, and feeling like I owed him an effort. That said, I think it never hurts when asking an OS contributor for a favor to point out you do the same, even to a completely unrelated project.