When you create a blog or website, without the user participation and comments its not really going to fly. Comments give more perpective to articles, questions asked by users expand the scope of the article. So user comments are absolutely needed to make a website successful. Question is how do you avoid spam bots and thousands of spammers waiting to bombard your site with useless comments and automatic posts. EDIT - 24th Mar 2014
If you are using audio module in drupal there is a limit to size of audio files which can be uploaded. After much research I have found that the following can be used to increase the filesize limit of audio files. and also to bulk upload your audios
What I really wanted was that every day my website should be updated with some random previous content, that way the visitors see new content if they visit everyday.
There are couple of methods to do this. First you can create a block and display it in homepage with 1 node in it. You can name it as spotlight or something, or you can create your entire front page with random content. In this method the content will be randomized upon refresh it wont be updated daily. Lets look at the first method.
In Drupal 4.7 you have to go to : administrator > settings > posts>> . The default teaser is 600. You can adjust it to 200 - 2000.
To make the teasers to zero length you will have to update your node.tpl.php file & add a "if" block ( if page == 0 ). Here is the example snippet of one of the node.tpl.php. Make sure you modify your theme's node.tpl.php
The only contributed module that allows voting on teasers is "Vote up and down". The limitation of using this module is there is no rating based on 1 -5 or 1- 100. Users can only vote up or down. And the number of votes determines the popularity of the post.
The good thing is using this module you can make your site like digg.com.
b) Another contributed module Tweakbox by user acp is considering to implement this functionality in future version of tweakbox so you can rate on teasers.