+ Interesting Links These are random links that might be interesting for Horde developers +++ Security * [http://www.owasp.org/ Top Vulnerabilities in Web Applications]. It may be most efficient to pick one potential vulnerability and audit the entire code base for it before moving on to the next vulnerability. * [http://www.theregister.co.uk/content/55/29511.html Top 10 e-commerce software flaws] +++ Performance * [http://www.advogato.org/article/646.html Advogato article on large-scale web applications] * [http://www.zend.com/zend/art/ref-count.php A very good read on how references and reference counting work] * [http://phplens.com/lens/php-book/optimizing-debugging-php.php Some more optimization pointers] +++ Usability * [http://advogato.org/article/374.html How non-programmers use documentation] * [http://www.research.ibm.com/remail/ IBM's Reinvented Email Client Prototype]