He or she is confused about the design of the forums, wondering what a moderator is and the orange and blue flags.
Moderators keep the forums in check by closing threads, deleting spam, removing offensive posts/threads, and other such things. Administrators are the same as moderators, except they can configure the permissions of each category, name them, add new ones, delete existing ones, and much more. As to the flags, orange ones represent threads you've read and blue ones represent ones you've responded to (this one should be blue). The color is strong if new messages are present, fainter if nothing is present.
Edit: if you're into a lot of video processing (video encoding or transcoding), then you might consider the i7-2600K for the quad core. Otherwise, the i5-2500K would be sufficient enough and it should easily overclock considerably, even 1 GHz more (with the right RAM, PSU, motherboard, etc.).