2. The machine system of claim 1 wherein: the presentation format controller includes an invitations display generator that produces a circular and/or banner-like image in a display region of a display available to the first user, the produced image having icons representing recommended invitations and/or recommended suggestions of additional informational content, where the icons include first icons representing more strongly recommended ones of the invitations and/or more strongly recommended ones of the suggestions, and where the icons include second icons different from the first icons and representing less strongly recommended invitations and/or less strongly recommended suggestions.
2. The machine system of claim 1 wherein: the presentation format controller includes an invitations display generator that produces a circular and/or banner-like image in a display region of a display available to the first user, the produced image having icons representing recommended invitations and/or recommended suggestions of additional informational content, where the icons include first icons representing more strongly recommended ones of the invitations and/or more strongly recommended ones of the suggestions, and where the icons include second icons different from the first icons and representing less strongly recommended invitations and/or less strongly recommended suggestions. 3. The machine system of claim 2 wherein: the first icons are presented in a first portion of the display region; the second icons are presented in a different second portion of the display region; and the first portion of the display region that has the first icons is positioned substantially centrally in the display region thus causing the first icons to be positioned more centrally in the display region than are the second icons.