Is it important to get a web host that offers colocation, or does that not really matter?
Is it important to get a web host that offers colocation, or does that not really matter?

If you are signing up for colocation, then yes - it's important to get a web host that offers colocation.
Shane.
Basic Linux Hosting on classic platform; Parallels Plesk Panel 10.3.1
Here a good article from wikipedia about colocation service;
Web hosting service - Wikipedia, the free encyclopediaColocation web hosting service: similar to the dedicated web hosting service, but the user owns the colo server; the hosting company provides physical space that the server takes up and takes care of the server. This is the most powerful and expensive type of web hosting service. In most cases, the colocation provider may provide little to no support directly for their client's machine, providing only the electrical, Internet access, and storage facilities for the server. In most cases for colo, the client would have his own administrator visit the data center on site to do any hardware upgrades or changes.