Wednesday 29 November, 2006 (Geek | Humor)
This may not be Web 2.0 but it is definitely proof that some people have too much time on their hands...
http://$urlcalc(help).x42.com/
If you need to know what 212x17 is then go to http://$mul(212,17).x42.com/
Brushing up on your RFCs? http://$rfc(1725).x42.com/
Google must have used this site as inspiration for their search calculator: http://www.google.com/search?q=212x17
Tuesday 28 November, 2006 (Geek | Web)
I found a cool applet online that creates a graphical tree structure of any website. This is the first page of nSilverBullet on the 28th November 2006:

blue: for links (the A tag)
red: for tables (TABLE, TR and TD tags)
green: for the DIV tag
violet: for images (the IMG tag)
yellow: for forms (FORM, INPUT, TEXTAREA, SELECT and OPTION tags)
orange: for linebreaks and blockquotes (BR, P, and BLOCKQUOTE tags)
black: the HTML tag, the root node
gray: all other tags
You can try it out here: HTML DOM visualizer
Thursday 23 November, 2006 (Geek | Humor)
I found a leader test at Similar Minds, since I quite like my result I'm posting it here. Who do you resemble?

What Famous Leader Are You?
personality tests by similarminds.com
If I'd got this result then I wouldn't have admitted it!
Friday 10 November, 2006 (Geek)
I am always looking out for geeky, fun stuff on the Internet. SCIgen is a typically geeky implementation of advanced mathematics and its fun! SCIgen is a generator for random Computer Science research papers. Some papers have been submitted to real conferences and even been accepted which really is quite amazing!
Now I am not a mathematician but I think that I have understood a little bit of what a context free grammar actually is. A more mathematical description can be found here: http://planetmath.org/encyclopedia/ContextFreeLanguage.html. As far as I understand context free grammar is a set of rules that create rule-based patterns. These patterns can then be combined as nodes in other patterns using the same rules.
Mathematical notation is built up like this: the rule is that a number is followed by an operator and then another number 1 + 2. These can then be combined again as a node in the pattern: (1 + 2) + 3. Or two patterns could be combined: (1 + 2) + (3 + 4).
With these rules we can build enormous structures where the parts of the overall pattern have no common context or structure, they just follow the same rules. With these mathematical structures it is possible to do all sorts of cool stuff that is completely random but has a cohesive look and structure.
Context Free Art – maths based art.
SCIgen - An Automatic CS Paper Generator – maths based writing.