I know I'm not Posterous' target audience, but it drove me nuts how their formatter mangled my text, littering <br>s all over the place, then mashing up all the line breaks. More than once, I've found out that their post editor is flat busted for me -- usually when the formatter has made a mess of something I've already posted, conveniently making it impossible for me to clean it up.
Even better: back in December, they decided to bring Viglink on board, a service which adds a Posterous affiliate code to links in your blog that don't have an affiliate code already. Of course, they didn't see fit to inform their users of this change; one of the Posterous founders replied on HackerNews, but they haven't mentioned it on their official blog or twitter stream.
I know the folks here at DW will never pull that kind of stupid shit. To boot, Dreamwidth has always been rock-solid for me in terms of reliability, which is funny when you think about how often the lights seem to go out on the services with dozens of full-time staff and sacks full of money. In short: thanks, denise and mark. =)