Strangely enough, I don't think I have ever had anyone 'promise' me a large tip for the future. Maybe hints, but I take them with a pinch of salt as I NEVER expect a member to tip that amount in one go! If they do I feel undeserving... but of course happy and delighted!
I had one new member claim he was going to be my number one cumulative tipper for June (my birthday month), which to be fair was totally within reach and lovely of him to tip me every night I was online in big amounts of tokens. I think finally he was scared off by my monster tip on my Birthday which he might have hear about the next day... I haven't really seen him again, which is a shame, not because I want his tokens but because he was a nice addition to the room and a sweet and interesting person.
I am worried that because he didn't manage to get number one, he felt like he had lied to me and didn't want to embarrass himself... I may be wrong, but just a theory.
Like I say, I rarely get 'promisers' and even if I did I wouldn't believe it.
Any big tips I have had have usually been by regulars who like to give me a heart attack for shits and giggles