I found this on the web and thought I would share with my clients:
When creating your Twitter SEO strategies, remember that all your tweets shouldn’t be about your own website and content. This is bad for your website promotion and would turn people off. No one wants to follow a conceited, I’m-so-great prima donna. Besides, if your tweets would be all about your products and services, they would look spammy. Post engaging and useful information, answer and ask questions, tweet interesting facts, and send messages that your followers will find valuable.
Consider a username that’s relevant to your niche or your business. Your username can affect your website promotion since its part of your page’s URL and title tag.
Choose a relevant account name. This will further boost your Twitter website traffic, since the account name is also part of the page title. The account name should be different from the username.
Since your bio serves as the meta description tag, choose your text wisely and keep website promotion in mind.
A tweet’s title tag is made up of the username of the account sending out the tweet and the first 30 characters. Another Twitter SEO tip is to place the keywords in the post’s first few words.
When retweeting, there are Twitter SEO techniques you can follow. For instance, it’s better to place the “RT@username” at the end of the tweet so that you’ll have plenty of room to place the keywords in the tweet. Also, limit your tweets to 120 characters so that there will be space when other users add the RT@username. Otherwise, some parts of your post might get chopped off.