I just found out that Suzanne was in philadelphia on May 31st. Her Road Diary mentions that few people showed up to the signing. I know several people who would have attended (myself included) had they known.
I think this is the case in a lot of areas. Fans may be willing to support their favorite artists, but it's hard to when a lack of advertising or media coverage has them arriving "under the radar." The TLA is a great venue to see an artist. I really feel like I missed out.