I've built a tool to schedule Beeminder goals with different rates for different days of the week. Check it out here.
Beescheduler lets you schedule different rates for your Beeminder goals based on the days of the week. I wrote it so I could focus on one project Monday - Wednesday and different ones on Thursday and Friday. This is much better than doing a tiny amount on all of them every day.
It's sort of like a much fancier version of the built-in "weekends off" feature.
For another example, you could write 500 words on Monday, Tuesday and Wednesday and take the rest of the week off. Or go for short runs every other weekday and longer ones on the weekends. Or whatever else you can think of.
Caveats:
This is beta. I've been using it, in various incarnations, since last October, but this is the first time I've given it to anyone else. It may well derail you, or otherwise break things. If that happens, you can email me at beescheduler@echonolan.net and/or contact Beeminder's support. I can fix things with the scheduler, but some things aren't fixable without the special privileges they have. Worst case you can revoke Beescheduler's permissions in your account settings. It won't be able to do anything after that.
It interacts poorly with other things that edit your roads. Specifically, retroratchet won't preserve the day-of-week structure. I have no idea what will happen if Beescheduler and "weekends off" are on simultaneously.
It hasn't been tested with anything other than "do-more" goals.
Let me know if you end up using it and how it goes.