On the contrary.

You would assume - since I run the only British Airways blog of scale and have done for 3 years - that most people who read the BA FT forum would read my site. However, whenever someone (or myself) includes a link from the BA FT forum to my site, I get well over 100 hits from it. Most of those people are good candidates to be converted to regular readers so it is valuable traffic.

I am actually surprised that many blog writers reduce their contributions to FT since it is a good source.

You need to respect the FT rules, of course, which effectively mean you need to write "This is what I think or know, and I wrote about it at greater length here if you are interested."