An anonymous reader writes "We are a large (multi-national) non-profit and currently deal with 503s on a near daily basis. We've worked on this for over a year and the host hasn't been able to figure out how to fix it. We're paying for a managed host and need to evaluate other options. My boss has tasked me with evaluating a new one. I'm the most geeky of the group, so I know the terms, but don't have a sense of what's actually needed to suit our needs. We sometimes have upwards of 1,000 people browsing the site at the same time, so my sense is that we shouldn't need massive amounts of power or bandwidth... but, somehow that's not working on our current host. Can anyone help me get a sense of what types of hosting will best suit the needs of a 'large' non-profit? We're not Facebook, but we're not a mom-and-pop shop. Any help or tips would be fantastic, particularly if you've also selected a new hosting provider in the past year or so. I don't necessarily need actual names (though those would be nice, too) but at least some tips on what makes a huge difference when suddenly a whole bunch of people around the world read an email and want to help out."