Depends on what the reasons for considering it "worth it" are. It will be a facebook idiosyncratic API, that is pretty certain. That API is fairly simple though - some cookie auth, and a web form or two to scrape.
If we're counting "number of people who might use it" as a worth it measure, then, well, like it or not, Facebook has a very huge number of people on it. Yes, the intersection between FB users and DW users is probably not immense... but any other weblog APIs also have a pretty small intersection, I suspect.
There is of course a risk of FB changing it, resulting in the feature stopping functioning until it's fixed - but I haven't seen that particular chunk of FB change much.
no subject
If we're counting "number of people who might use it" as a worth it measure, then, well, like it or not, Facebook has a very huge number of people on it. Yes, the intersection between FB users and DW users is probably not immense... but any other weblog APIs also have a pretty small intersection, I suspect.
There is of course a risk of FB changing it, resulting in the feature stopping functioning until it's fixed - but I haven't seen that particular chunk of FB change much.