Originally Posted by Faith
Tip jars can offend people because they might have the feeling that they are paying twice. Which basically means that, in some peoples mind they feel as if the person should increase the original price rather than tip. But I have no idea how a tip jar can relate to a donation button, apart from the fact they both include money and that they're an option.
To me, that is still no reason to feel offended
. It's not as though you have to put money in there, and as far as I can tell, it doesn't scream any ad hominems at you. If you feel offended over something so trivial, you'd have a tough time operating in the real world.
But the bottom line is this: A donation button would not present any problems, and would only reap good results.