I just came here to beg for the API to support posting (with html) because we do an enormous of number of posts and we can automate everything except getting through the ever-increasing number of options in the posting process. We would really like to see the API expanded to allow posting. We have mentioned it to the support people about 150 times.
I had heard that it existed at one point, but was deleted. Obviously this is a feature at other sites like X, so it seems like it isn’t that crazy.
I have a feeling they removed it because they keep adding so many options to the posting process (Which I don’t want/use) that they could not keep an API updated. Having said that code instability and a lack of consistency to the product is a poor excuse for not doing it.