This is the June 16 2009 special edition of Who's Blogging What, a weekly newsletter that covers more than 1,000 top web marketing blogs to help busy online professionals involved in social media, search marketing, email, user experience and web analytics. Listed below are the posts on Twitter marketing that our readers have found to be the most useful. Subscribers receive updated lists weekly. If you want to be kept up to date you may enter your email address in the box at the right.

Current subscribers need to do nothing at this point...thank you for your continued interest.

• 4 Ways Companies Use Twitter for Business (ReadWriteWeb)
• Nine Twitter Tips for Business (PC World)
• 7 Ways to Use Twitter for Business (Whoast)
• How To Boost The Conversion Rate On Twitter (Lucafiligheddu)
• Mining Twitter for Leads (Duct Tape Marketing)
• Yes, You CAN Make B2B Sales Happen Using Twitter (One Degree)
• 7 Questions Some Brands Are Asking About Twitter (Jeremiah Owyang)
• Making The Case For Marketing To Baby Boomers On Twitter (Karner Blue)
• How to Make Money Using Twitter (Web Connoisseur)
• Use Google Analytics to Get a Better Picture of Your Twitter Traffic (Codswallop)

Do something valuable and earn more followers

There is a lot of value for your Twitter followers on this page -- they might even want to favorite it. This button will take you to your Twitter page with a short 109 character Tweet (leaving plenty of room for ReTweets). Use it if you like or come up with something even better.

Your followers will appreciate it and so will we. Meanwhile you'll also be giving exposure to the bloggers who do all the great work. Thanks!

• 6 Twitter Search Services Compared (Mashable)
• 8 Excellent Tools to Extract Insights from Twitter Streams (Social Media Today)
• 14 MORE Tools of Highly Effective Twitter Users (Kenny Hyder)
• 5 Terrific Twitter Research Tools (Mashable)
• Twitter Power System Review (Online Social Networking)
• 7 Top Twitter Topic Trackers (ReadWriteWeb)
• Trends On Twitter - What do YOU use? (Mr. Tweet)
• 40+ New Twitter-Related Apps (RotorBlog)
• Twitter Search - 20 alternative search engines (Phil Bradley)
• 25 Twitter Apps for Multi-Account Users (Birdsall)
• 11 Useful Twitter Tools That Don't Require Your Password (TwiTip)
• 15 Fascinating Ways to Track Twitter Trends (Mashable)
• How Far is Your Twitter Reach? (Twitterrati )
• 29 Twitter Apps for the iPhone Compared (Mashable)

• Copywriting for Twitter: 10 ways to make every tweet count (Econsultancy)
• The Art of Writing Great Twitter Headlines (CopyBlogger)
• 10 Twitter Tips for Professionals (One Degree)
• How to Ask Questions on Twitter and Get Responses (Viva Visbility)
• How To: Use Twitter for Customer Service (Mashable)
• How to win Twitter followers and influence people (ars technica)
• 8 Steps For Building Community On Twitter: Tips For Membership Organizations (TwiTip)
• Six Ways You Should Be Using Twitter that Don't Involve Breakfast (LifeHacker)
• The Hierarchy Of Tweets - Analysing The Psychology of Twitter (Innovation Diaries)
• Twitter manners- how to write good tweets and be a good twittizen (Janet Fouts)
• How to Get More from Twitter (PC World)
• HOW TO: Get the Most Out of Twitter #Hashtags (Mashable)
• How to Find Twitter Twits to Retweet Your Tweet! (TwitTip)
• Ultimate Guide to Twitter Hashtags (Search Engine Journal)
• Twitter Analytics : Which usage behavior attracts many followers? (Liffe Analytics)
• Targeting Location and Conversation on Twitter (Kyle Lacy)
• Dayparting Twitter (Duct Tape)
• How To Get The Most Out Of Twitter On Your BlackBerry (Lucafiligheddu)

• Don't get confused: Facebook's open stream approach isn't like Twitter's (LA Times)
• Twitter Tweaks Its Title Tags For Better Google Juice (TechCrunch)
• Twitter Versus Facebook, A Comparison Of The Top Users (All Facebook)
• Google updates page rank. Twitter profile pages take a beating. (Next Web)
• Glue Lets You Browse the Web With Your Facebook and Twitter Friends (Mashable)
• Twitter's power to misinform (ForeignPolicy.com)
• Using Twitter for search engine marketing (Pandia)
• Twitter Page SEO: 5 Tips To Optimize Your Twitter Page (Source Square)
• Twitter Quietly Launches a Competitive Product to Facebook Connect (Inside Facebook)
• The 10 Sites Benefiting The Most From Twitter's Traffic Explosion (Silicon Alley Insider)
• How To Use Twitter For Building Links (SEO Journal)
• VIDEO - How to use Twitter for linkbuilding (Seer)
• 10+ Twitter-Related Facebook Apps (RotorBlog)

• 25 of the Best Designed Twitter Homepages (Design Reviver)
• 13 Tutorials & Resources for a Perfect Twitter Background (Design Reviver)
• 16 Genuine, Authentic Designers on Twitter (Six Revisions)

• The Ten Ways Twitter Will Permanently Change American Business (24/7 Wall St)
• New Twitter Research: Men Follow Men and Nobody Tweets (Harvard)
• March Web Stats Reveal Twitter Frenzy (Marketing Charts)
• A Twitter Spinoff Launches for Moms (Digits)
• Salesforce and Twitter Could Power Dirty Tricks (PC World)
• Twitter To Expand Search Beyond Own Site (Moco News)
• Jakob Nielsen Critiques Twitter (Business Week)
• Twitter Might Start Adding Comments & Location-Based Information to Each Tweet (ReadWriteWeb)
• How Twitter Will Change the Way We Live (Time)
• Flirt140: Find a Date on Twitter (RotorBlog)
• A Study in User Experience: Twitter & #fixreplies (Design for Users)
• Marketers Mull Value of Twitter Search Ads (ClickZ)
• FriendFeed is absorbing more Twitter users, and that's good for Twitter (Venture Beat)
• Text Ads On Twitter Raise Some New Questions (paidContent.org)