Thanks. A useful site. Though I would like to see an option to list some of the add-ins, or complementary books, in chronological order within long series, such as some of the Baen series, rather than just listing them as a separate series.
For example if they were to add the recommended reading order of the Grantville Gazettes to the 1632 (Assiti Shards) series by Eric Flint, and some of the "Honor Harrington Universe" books to the overall Honor Harrington series it would be a great addition.
I found reading the "Honor Harrington Universe" short stories in the correct chronological order interspersed between the main novels to be much more useful for appreciating plot/character development. The best example I've found for the Harrington chronology is actually on Wikipedia,
here. I've got a recommended reading order from Flint's site which includes the earlier Gazettes, but not all of them.
That would be the sort of information I'd go to a site like fictfact to obtain.