For me it was very useful. Before adding my name to the list, I had managed to participate in ~40 SEGs, about 10 SEGs per day of the event. After being added by a couple, I did start seeing a lot more SEGs, so I was able to reach my goal of 100 (yeah, total SEGs I managed was 107 or something), then attempted to go for the 1000 rating, but failed just short (1050 rating or so).
Should there be such a list next time, I will be signing up again, and hopefully being better at finding/hitting stuff.

So let me say Thank You for the list and the help.