MOG

The other day I tried to figure out what the lyrics to "Wichita Lineman" by Glen Campbell were saying . . . well, to be precise, I knew what they actually were (Google the song name and the word "lyrics" and you'll get more sites than you can use), but I didn't know what all of them meant. As I Googled, I found Songfacts, a helpful little site that seeks to answer my type of lyric question.
Songfacts is done blog/messageboard style and is filled in by it's users, so all interpretations are subjective and range in quality. If you want detailed analysis of certain artists' work (such as Weird Al or Stephen Sondheim), individual fan sites for those artists are much more thorough. Still, if you just want to get some ideas about what a "Wichita Lineman" is, it's one place to start besides just Google or Wikipedia.