1. Here is a list of all time best WordPress plugins. There is a must list of plugins, stuff you should install in every blog you have

    Must Install Plugins

    These are plugins that should be in every wordpress installation. The kind of plugins you wish would be already included in the basic wordpress installation.

    Akismet
    To kill 99% of the spam in your comments

    WP-DB-Backup
    You need to backup your database, and this plugin does it for you

    Google Analyticator
    Connect WP with Google Analytics

    Google XML Sitemaps
    To tell google everything about your pages

    Make it social

    Twitter Facebook Social Share (Kunal Chichkar)
    Amazing plugin to get Facebook Likes – Google Plus – Twitter and more.

    Facebook Comments (I use the Alex Moss plugin)
    To get facebook comments in your wordpress pages and post

    Must (if you are advanced user)

    Exclude pagelink
    Sometimes you have pages you don’t want to show on the menus. This plug in make you select what pages you want and don’t want to show. Simple and effective – link

    • No Self-Plugins
      (if you used wordpress before, using inside links between posts, you know what this does)
    • Broken LInk Checker
      in a minute you can check all the links in the website and see if there are some broken
    • Advanced Permalinks (John Godley)
    • All in One Seo Pack
      Search Engine Optimization

    More more more

    Plugins I am curious about but I haven’t checked their full potential

    • Popularity Contest (http://wordpress.org/extend/plugins/popularity-contest/)
    • NextGEN GAllery
    •  Wordpress simple Paypal Shopping cart

    Suggestion?

    Any must plugin to suggest?