Top High Quality Web Directories
Here is list of top directories where you must submit your site :
Dmoz - Free web directory one of the most quality directory in world, owned by Google.
Yahoo Dir - Costs 299$ year helps to improve trust from Yahoo and google too.
GoGudes - 39.99$ for one time.
Gimpsy - Support free submission, if you want your site to be approved in 30 days 29$ and if in 4 days 49$.
JoeANT - 39.99$ one time fee.
Skaffe - accept free submission and 49.99$ for paid.
www.web-beacon.com - Accept only paid submission 39.99$.
www.wowdirectory.com - Life time listing 43$.
uncoverthenet.com - starting from 159$ for lifetime listing or 59$ yearly.
Delete Duplicate Rows In Mysql With PHP
$dupq = mysql_query("SELECT * FROM `db`"); $dups = mysql_fetch_array($dupq); foreach($dups as $dup){ mysql_query("DELETE FROM db WHERE duplicate_COLUMN='".$dup['duplicate_column']."' AND id!='".$dup['id']."'"); }
duplicate_COLUMN - Name of column and $dup['column_name'] delete duplicates which include same column data.
Page Speed extension for Chrome
News from google page speed is available for download to Google Chrom Browser, you can download it from here http://code.google.com/speed/page-speed/download.html .
Google Index Twitter/Facebook Links
Starting from December 2010 google started to index links from facebook , twitter, FriendFeed. You can easy check it from Google Webmasters tool and also official comment from google - Matt Cutts.
Remove Apache Headers
For me it's really wrong to show everyone which version of apache you have installed and other informations, many crackers can use this info to make attacks to your web server, so it's will not be bad to hide them, this is really easy all you must to do is open httpd.conf file with vi command "vi httpd.conf" and find "ServerSignature On" replace On with OFF at next line add "ServerTokens Prod", thats all restart apache server and enjoy your server version will not be available not in headers nor in error pages.
Geotargeting with PHP
Its really important some time to use geo targeting for your web site users for example if you have e-commerci site or for any other sites, I'll show example which give you opertunety to use geo ip with php scrip lets start.
How to Emulate a Remote Linux Desktop From Windows
It's really easy to control linux OS from windows by using remote desktop. all what you need is several free software and done. first of all you must download SSH client I recommend Putty its free and really nice soft you can download it from here "http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html" second step is to login with SSH as root and install VNC server with cent os you can do this with this command "yum install vnc-server" also you must recheck that you have installed Gnome Desktop this is important if you don't have you must install it too " yum groupinstall "GNOME Desktop Environment" " you also can use KDE&XFCE, now edit xstartup file "vi ~/.vnc/xstartup" it must be like this one and plus -Find the section where it says twm & and replace it with your choice. I know there are more, but these seem to be the most popular ones. Don't include what I have in the parenthesis
-startkde & (used for the KDE window manager)
-exec gnome-session & (used for the Gnome window manager)
-startxfce4 & (used for the XFCE4 window manager, my favorite choice)
$100 Of Free Facebook Advertisement Credit
You can get free $100 of advertisment credit at facbook, you must only join The Visa Business Network, and when you finish singup you'll get confirmation email with coupon code, folow instuction and enjoy free 100$ of facebook credit. 
Top 10 Websites By Time
I found nice article about top 10 web sites in 2007, I will list it in this small article, this is not what I think this is what I have read, but no matter article is interesting.
#1 Lemonade.com First place, site is about how to make extra cash by selling items, by adding gadget to your blogs or sites.
#2 AskSunday.com Get your own personal assistant free for one week, accessible 24/7 by email, phone, and the web.
#3 Wink.com With more than 200 million people signed up for social networks, how can you quickly find your best buddy from second grade, that guy you dated in high school, or your co-worker from three jobs ago? "I must say that in 2007 - 2008 this sites become very popular not only for users for developers too!"