I should do that. It would probably surpass whatever contribution I would end up giving them directly byquite a bit. I do want to support the developers though, so maybe I'll do 70% EFF, 25% devs, 5% humble tip (gotta keep the lights on).
By the time a game hits a bundle the impact on the developer's bottom line is almost negligible. If you want to support developers, buy their games when they come out. Doing otherwise is "nice," but ineffective.
It does help more than you think, being in a bundle is a big chunk of revenue for a smaller developer. While the sales do dwindle really fast after the launch, the long tail is still significant.
If games sell well early into their release, the devs would be elated and motivated. Also they would get more money at the time they are hoping to get it.
Also, when you buy a game on the Humble Store you can select which charity gets 10% of the purchase price. It gets set to some default, and it took me a long time to realise that you can change it. I have mine set to the EFF, but there are hundreds of options. The Humble Store is incidentally a great place to buy games.
