An excusive and exhaustive list of hand picked tools for bloggers. The inclusion of articles and sites would be on an ongoing basis. You might want to bookmark this for future reference.
Create a Back Up of your blog
Blog Back Up Online: A great free resource. Works for blogspot as well as wordpress users. 
Free Photos for your blog
Free Photos for blog from SXC One of the best source for royalty free photos.
Free photos for blog from istockphoto 
High quality free photos from HP 
Huge list of free photography sites
Free icons for your blog
Web2.0 like free icons from FreeIconsWeb 
Create a free logo for your blog
Create those 125*125 ads free
Image Editing
To enlarge or shorten image use the ‘Stretch and Skew’ option present under ‘Image’ in our very own MS Paint (Windows user 🙂 )
Track your website visitors in realtime
With maps.amung.us you get to see exactly where your site visitors are from – live! These maps update themselves on your site without having to reload the whole page
Check your website rankings on major search engines, the easy way
Google Position Checker Simply Enter a URL and get its current position on Google Search Engine.
Page RankChecker
Pagerank Checker Tool in over 700 datacenters You can check your blog’s PR across 700 datacenters. Handy tool during those freaking PR updation days.
How to check fake page Rank Check if the Google Page Rank for a particular site is fake. This can be especially useful for those who are into buying and selling domain names.
Site Statistics Tools
Sitemeter: Simple and nice interface. 
StatCounter: Similar to sitemeter but have an advantage that you need not show it’s icon on your blog which is mandatory in case of sitemeter. 
Google Analytics: Best, but for geeky guys. Otherwise all the options might confuse you. 
SEO for Firefox by Aaron Wall: Quickly check your Page Rank, Yahoo Links, edu links, Alexa, DMOZ status, BOTW and what not. Highly recommended. 
Grammar Checking Tool: Good writing creates an lasting impression. Don’t let your bad grammar let you down. If you are not sure about grammar skills. Check these blogs.
Check for speeelling and grammar mistaked 
40+ Tips to Improve your Grammar and Punctuation – Dumb Little Man 
Find out who is hosting a website
whois.sc The best service of all. You can even drill down to find how many other websites are hosted by this person. 
Who is Hosting This? Nice intuitive and easy to remember name, incase you forget the one given above. 
Find out how a website is made.
Web Technology Profiler Will tell you the technology used to create a site. 
Test your websites in diferent browsers and mobile phone
Test your web design in different browsers – Browsershots Nice tool to check the layout of your blog in different browsers and their versions. 
Check your site on mobile phone 
Check your Robots.txt for errors
http://tool.motoricerca.info/robots-checker.phtml Excellent tool to check and validate your robots.txt file. Very Impressive. 
Web Directories
DMOZ: Open Directory: Considered to be one of the best web directories. Only negative point is the moderators are very slow to respond. It can days weeks even months before your site gets included. 
Free Directory List:Contains exhaustive list of free web directories.
Free Websites Template
http://www.interspire.com/templates/ 
Determine your internet connection speed
http://www.computers4sure.com/speed3.asp?Sp=379.4 
Download entire website on your computer
Webaroo Download entire website on your computer. 
Learn blogging.
Problogger A great source to learn about blogging
Daily Blog Tips Again nice blog on blogging. Daniel- the author is always ready to help you(even on IM’s)Â Â 
Yaro Starak Go over any ‘A’ lister’s blog, you will find them recommending his blog mentoring program. For sure, he must be doing something right.
LearnPHP
Learn PHP:PHP For the Absolute Beginner
For Blogspot Bloggers
Some useful tips to increase your traffic 
Recent Comments Widget For Blogspot Users with Source Code
Web Hosting Coupons
Best Web Hosting Discount Coupons
Email Address To Image Converter
Convert your bots readable address to human readable address and avoid spam Must have for every blogger. You have to give give away your address some or the other time on your website. Finally do away with those (at) and (dot)
WordPress Add-In
125 x 125 advertising plugin for wordpress: Not so talked about. 125*125 banners are hot and the best plugin to cooly manage them.
Adsense
A nice list of adsense Alternatives If unfortunately you get kicked out of adsense or denied entry into it.
Should you find a tool/site worthy of being included above please mention in the comments below
You can add me here on StumbleUpon
Ankur Jain is a Software Engineer in Test Automation. After a 5 years stint with Accenture and Oracle, he started his eLearning company. A long-time blogger and proud owner of the "Learn" series of websites. 
http://spydermate.com could come in handy too!