I realized I wasn't directly addressing the questions you raised. So here's my more direct response:
 - I have no preference of TBTF Log vs. TBoDay. 80% of the value for me comes from TBTF "Classic".
 - I get timely stuff elsewhere; if you do a better job, I'll use you, but frankly, I think you add more value via good collating from a broad range of sources and adding your own perspective (and occasional readers')
 - I don't use TBTF channel; haven't looked at it frankly, nor do I use your email channels; I just go to the TBTF home page and current issue pages
 - I'd agree with a previous poster that you probably should have set up a separate list for the Log and notified people appropriately
 - I wouldn't sign up for TBTF Log weekly, if there is a version with more perspective like TBTF Classic that comes out every 2-3 weeks too. It'd have to be daily-ish to add enough value over TBTF Classic.