I'd like to see the feature that users can create and maintain personal wiki-pages: This kind of feature has already been requested in various forms:
- Posting and answering questions you have already found the answer to
- Wiki pages on Stack Exchange
- Stack Overflow tutorials/papers
There are many users from whom I'd really like just to "learn things" without just browsing through their answers.
This would be some sort of extended "about me" where you can add and organize multiple wiki pages about topics you're interested in (and hopefully good at :)). You could just write about topics you have worked on, describe some clever solutions without the need of formulating it as a question and answering it yourself.
I'd add the possibility to vote for wiki pages, favorise them and add comments (as for questions) and to mark single pages as "community wiki". There could also be an area to see the newest wiki contributions.
Maybe this feature could only be enabled for users starting with a certain reputation (>500, >1000 ?), but this wouldn't even be necessary (if SO can handle the additional data amount :))
Regarding the concern that this feature would be beyond the "question/answer" character of SO: Since the wiki would be linked to a specific user, the main page of StackOverflow remains more or less untouched. You have to know how SO works in order to select one user (you have to know, which one your'e interested in) to start reading his pages. Of course, with external links to wiki pages this is not entirely true, but the main character would be preserverd, imo.
Also since custom formatting or styles would not be possible, the pages would be more focused on the (technical) content. That's a difference to a custom blog (which has a more personal character) and is also appealing to me.
Another possibility would be to add this feature to the Careers 2.0 site (since I'm there, that would be ok for me :) ...). But I'd prefer to have it within the scope of the "normal" StackExchange sites...