Then you are optimizing for a minority of your audience and alienating the majority, all for a shade of gray. Readability should never be compromised.

edit: And before this is perceived as me being hostile rather than my intention of helpful (though it seems it already has), let me say that this is the kind of site I have been looking for. And thus I want to use it and want it to succeed. But certain design decisions can imply things to users that may not be intended. Content that is difficult to read, especially content which calls for interaction, does the opposite of what its intended for. And that makes users feel as if they're not wanted.