There's another matching period coming up, it will be from August 2 at 2:00am ET to August 4 at 2:00am ET.
The WPI has already reached the 2'500$, so donations there will not be matched anymore, but Vivint will still match donations to the IACFS/ME, the National ME/FM Action Network and the Nightingale Foundation.
I don't know if i will be able to donate more, well, maybe 10 or 15$. But if somebody wants to make a donation, this would be a good oportunity, because Vivint will double it, up to 50$.
http://www.vivint.com/givesbackproject