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As I have announced in my ex-blogs, I am abandoning the blogosphere. From now on I work and write for my own site. The old blogs are still running but I am going to pull the plug in a few days.
I'm not going to use some blog generator (like WordPress) in my server. From now on, everything is static HTML. The only blog-esque technology still in use is the feed, but it is a site-wide feed, not just for new articles.
For example, if I make some relevant change in the Black-Scholes calculator, I announce this via feed, but the feed will point to the calculator page itself. I will write "posts" when there are relevant, additional information that justifies the effort.
Another "blog remnant" is the Logbook. It is a page where I keep links to "smaller" articles (blog-like, news-like or announcement texts), as well as old blogs' archive.
Note that I already have another page that contains articles deserving the name. I still feel the urge to keep this separation :)
I abandoned the blog format because I feel it is obsolete, or at least overexploited. For those who can't or don't want to keep a site, a blog is probably the best option to express opinions bigger than 140 characters. But, for the folks who also have a site like myself, the blog is kind of "predatory competition" for scarce resources: spare time and inspiration.
On top of that, I am still nerd enough to enjoy keeping a server, have control over my content, develop RSS-generating scripts etc. Most colleages can't hear about configuring Apaches, doing HTML etc. but I really like to do that, and keep my dexterity on such things.