As noted by seydlitz, there have been some of our esteemed crew's posts trapped in the blog's Spam folder. This has caused all kinds of frustration when you don't see a post appear. I'm kinda convinced it has nothing to do with your techniques or browsers.
We barkeeps are going to have to keep an eye on the "Spam Filter" feature that Google provides. My experience with another forum is that due to spammers getting more creative in methods of defeating spam prevention, some major hosts, such as Google, are tending to trigger more "False Positives" while they try to wrestle the problem to ground. I've cleared the Spam Folder by publishing all, to include the many "groans" about failure to publish. I'll try to check there twice a day to catch any unjustly accused material. If a couple of other barkeeps would do the same, that would help. Meanwhile, if a post doesn't, well, post, be patient.