This really is a chance for the small guy to get a bigger portion of the block win. What happened in 3 days would take 3 weeks with another large pool. I've seen some larger miners jump on and then jump off instead of staying around for the endurance round. I think staying with the pool now is most important as we are getting closer to finding a block. It's not a matter of if but when and the when should be sooner. Imagine jumping out a day before the first block is found.
Even if someone only mines for a day and leaves, they will still get their payment once a block is found if they mined enough to reach the 0.05eth threshold. So even if they are not there mining when the block is found, they get paid for the help they did give.
I'm still working on improvements to the website to show more detailed statistics so people have a better idea of how much they are mining and an estimate of how much they will earn when the block is mined.