10. <script src="âŚ">
⢠bad, bad
⢠blocks everything there is
⢠never ever
http://www.phpied.com/3po-fail/
+ SPOF-O-Matic
11. Async JS
⢠dynamic script node
⢠not as short
⢠mostly default now
⢠only blocks onload in !IE
http://calendar.perfplanet.com/2011/the-art-and-craft-of-the-async-snippet/
http://www.phpied.com/social-button-bffs/