Recent changes on the CTA have the chicago_el LiveJournal community hopping with discussion: new announcements (including the initially jarring addition of the cross-street to some stations; no more "This is Grand," for example); new maps (subway lines are no longer indicated; rush period lines are); new phone service (yes, US Cellular now works underground); and, not new, but a useful reminder: no bikes on trains on July 3 (when the system carries its highest daily passenger load of the year). [More: today's "Pop Goes The World" picks five favorite films that feature the 'L'.]