I've been thinking I'd not do it this summer, and I'm not in position to take any right now, though I did go ahead & read the descriptions of the 4 litters they're trying to get shipped out this weekend. I'm going to weekend away soon, too, and wouldn't want to leave some freshly-arrived runts. Yeah, I used "weekend" as a verb---you gotta problem with that?
No reason I can't at least think about taking some after that.
If you're a local feeling volunteery, here's the Humane Soc volunteer info page.