Long polling is a web application development pattern used to emulate pushing data from the server to the client. When the long polling is used, the client sends a request to the server, and the connection remains intact until the server is ready to send data to the client. The connection will be closed only after the data is sent back to the client or connection timeout occurs.
XHTML requires that all tags should be in lowercase XHTML requires that all tags should be closed properly XHTML requires that all attributes are enclosed in double quotes XHTML forbids inline elements from containing block level elements
You can do following things to reduce the page load time Reduce image size Remove unnecessary widgets HTTP compression Placing CSS at the top and script reference at the bottom or in external files Reduce lookups Minimize redirects Caching,