Re: A little word of thanks …
You really are on TV? I will love to watch video clips if you can share.
Well, no! 
I was simply joking with my statement, as in “I’m not a real doctor but I play one on TV.”
You did not mention about amazon wish list. It will be nice if it can be tucked somewhere in the profile pages of developers unless that is strictly against any policy or design.
I’m not aware of any policy that forbids this. Actually, you will find that some devs do have donation links on their websites. If there is a developer in particular to whom you would like to make a donation, just visit their website and see if they have a link.
