wikiHow, "collaborative" has a whole new meaning!

wikiHow is unlike any other wiki you can find out there. Here are some points that makes wikiHow special:
1. It is not topic-specific! Most wikis that are not part of the WikiMedia Foundation are usually specific/specialized in one topic. wikiHow on the other hand is not. You can find articles covering any topic.
2. It is a "format-specific" wiki. You can always count on the clear, step based, task oriented of each and every wikiHow article.
3. All are welcomed to and can edit. Anonymous and registered editors alike.
4. Unlike most other wikis, wikiHow's editors can all patrol recent changes, so you do not have to be an administrator to do so.
5. The community of wikiHow is from all cultures, age groups, education levels and any other social classification you can think of. In wikiHow, there are NO classifications, all are equally welcome and appreciated.
6. The community, being a very rich one in scope and magnitude, is very friendly, helpful, helping, welcoming, appreciating and tolerating.
7. All wikiHow articles are shared under a creative commons license (CC-BY-NC-SA 2.5) even long before wikipedia turned to the CC license.
8. The site is based on the well established and familiar MediaWiki Software.
9. The site adds a great wealth of tools to the software as extensions that makes editing articles much less painful, much more fun.
10. You can always find something to read, or most importantly DO in wikiHow.

In brief, it is one of the best collaborative sites you can ever find on the web today.

in reference to: http://www.wikihow.com/Main-Page (view on Google Sidewiki)

Great Data Sheet Catalog Site, but does it have limits??

So far, there were no electronic part that I could not find a data sheet for in this wonderful site!
However, it seems to have a limit on downloading data sheets. After downloading a couple of data sheets, it started giving me a "you are not authorized to access this page" message whenever I tried downloading a data sheet PDF (the searching feature is still working and the site itself, but only the downloading is not)
I tried to find any reference to this (quickly) but couldn't.
The site's search is very fast and light. It gives you results about your part from all possible manufacturers in an easy to access and quick way, which is what makes it better than any other data sheet site

بالرجوع إلى: Datasheet catalog for integrated circuits, diodes, triacs, and other semiconductors, view (نظرة على ويكي Google الجانبي)

Get Started with LISP

Lisp (programming language) - Wikipedia, the free encyclopedia
This is a great place to start especially if you're new to lisp. It gives the necessary introduction about the language and a simple quick discussion of its features then it provides you with resources about the language where you can go if you need more information.

Practical Common Lisp
The most appreciated book on LISP. The book is published in HTML format and the site offers a download of the source code (not the book itself).

LISP 1.5 Programmers Manual [PDF]
The first version of LISP

InterLisp Reference Manual [PDF]
A manual for the Interlisp dialect

ANSI LISP Standard
The ANSI standard for the language (Common LISP)

Tutorials:

• Practical Common Lisp an online book by Peter Seibel.
• Lisp Primer by Colin Allen and Maneesh Dhagat.
• Lisp tutorial by Faiz ul haque Zeya
• A quick guide to starting with Common Lisp.
• Common Lisp: A Gentle Introduction to Symbolic Computation by David S. Touretzky, available online and aimed at beginners.
• Casting SPELs in Lisp A cartoon introduction to Common Lisp.
• On Lisp free downloadable version of the book by Paul Graham.