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28 Oct 2010

Posterous, VigLink and NoScript
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It seems Posterous fiddles with outgoing links so they are routed via viglink.com. VigLink is some kind of affiliate program.

This interacts with the NoScript plugin in a funny way. NoScript lets users choose which domains get to run JavaScript on their browser, and also has some XSS protection rules built in. If you disable the viglink.com domain, this will work as expected — no link redressing. But if you try to be a nice guy like me and allow the viglink.com domain to run JavaScript (hey its a free service…) the XSS protection will kick in and break the routing functionality, so users are left with a blank screen. Well, back to disabling viglink.com then.
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5 Aug 2010

Positive Effects of a DDOS
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It seems Posterous was hit by a DOS, and as a fix the Posterous team seems to have deployed quite a bit of additional capacity. At least the site feels much snappier now :–)
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24 Jul 2010

Posterous bugs
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Recently stumbled upon this one: attaching an image to an emailed-in post makes this image appear in the post, but only if you’re not using markdown formatting. When using markdown formatting the image doesn’t show up. Not a big deal if you’re aware of it — simply mail in HTML or plain text.

Funnily enough the image does appear in the edit view of the post (which makes me suspect that markdown is rendered at the output, and the renderer won’t handle attached images).

And an (even smaller) buglet: using HTML to embed images in mailed-in posts will result in two images being shown. Apparently posterous groks the content-id syntax (which is a great feature btw.) but thinks the image attachment should be shown separately, even though it is already referenced in the HTML mail.

Both of these are quite harmless as workarounds are easily available. Its just a pity that they’re not documented (at least I didn’t find anything), so the users have to figure this out themselves.
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9 Jul 2010

Switching to Posterous
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So I've ditched my old blogging setup, with the wonderfully hand-crafted HTML and the customised blogging software, and exchanged it for a hosted service. Why? For starters, the templates (and software) weren't all that wonderful. From a creativity viewpoint there were all right, not to speak of the giving-a-developer-something-to-tinker-with viewpoint, but lacking in funtionality.

This is what I like about Posterous vs. other blog hosts:
- The idea of mailing in stuff is appealing. I've got a mail client on my phone; I can integrate a mailclient with emacs on the desktop, and I can upload images &c. in one go. There are others who support mail-in, but IMHO posterous does it best.
- Autopost to Facebook. Whenever I post, text+images also get uploaded to FB
- Easy to use; no extra steps required to use Markdown for example
I've been concerned about mail spoofing initially. Posterous uses the "From:" header of your mail to decide which blog to post to; needless to say this is rather easily "forged" and I use the quotes here deliberately -- forging usually requires some kind of effort, falsifying mail headers does not. (I fondly remember an old sysadmin acquaintance of mine who used to send mail as "sex.crime.satan@hell.org" to scare his users. Yes, ca. 1995 I thought this was funny). To make this a bit harder to abuse, I set up a mail alias using the sub-addressing syntax, ie. a mail address of the form "me +somehardtoguessgibberish@sabaini.at" which I use to post from. This, I hope, should deter spammers, and is safe enough for a blog IMHO. Old content still lives here: http://sabaini.at/blog
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18 Jun 2010

First Post!
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In the process of transitioning... the old blog is here: http://sabaini.at/blog
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