Here’s 76 ways you can use twitter in your business…

1.  To promote your worthwhile cause/favourite charity
2.  To point people to the latest copy of your newsletter
3.  To promote your internet radio show on blogtalkradio.com
4.  To tell people of your event on eventbrite.com
5.  To send out an updated price list to clients & prospects
6.  To share your powerpoint presentation on slideshare.net
7.  To ask for referrals
8.  To qualify prospects
9.  To tell people about your latest press release on prfree.com
10.  To promote your latest article on ezinearticles.com
11.  To get eyeballs on to your ad on ebay
12.  To Share some useful tips about your services
13.  To get signups for your workshops and seminars
14.  To conduct market research
15.  To promote your latest podcast
16.  To share your seminar talk on slideserve.com
17.  To give your feedback of software you just bought
18.  To conduct marketing research
19.  To show the latest thread on your blog (twitterfeed)
20.  To point them to your press release on PRWeb.com
21.  To get eyeballs on to your squidoo.com lens
22.  To get people to book on your workshop via regonline.com
23.  To position yourself as an expert
24.  To get new members to your clubs on groups.google.com & groups.yahoo.com
25.  To promote your articles on goarticles.com
26.  To increase response to your base.google.com ads
27.  To tell people about onlywire.com
28.  To share your white paper on scribd.com
29.  To launch your new premium service
30.  To tell people you’re going on holiday
31.  As a way to promote your products online
32.  To promote your latest video on You Tube
33.  To promote your ad on oodle.com
34.  To allow people to download a trial version of your software
35.  To promote your latest job vacancies
36.  To find out what latest job vacancies are out there
37.  Share some useful tips about your products
38.  To promote your latest photographs on flickr
39.  To get comments onto your blog
40.  To share an important fact form wickipedia.org
41.  To give referrals
42.  To help others generate traffic via trafficswarm
43.  To show your demo video on video.google.com
44.  To show people your trial software on download.com
45.  To boost morale
46.  To create mutual opportunity for friends
47.  To simplify/improve your customer service and support
48.  Tto tell people about theresultsacademy.com
49.  To promote your new membership site on ning.com
50.  To promote your latest book
51.  To help with recruitment for your MLM Opportunity
52.  To drive traffic to www.ryanhamze.com
53.  To remind people of your terms and conditions
54.  To tell people how to create a mobile website with mofuse.com
55.  To give people a google map url on how to find you
56.  To direct people to your ezine sign up page
57.  To get people to vote for you at dig.com
58.  To collect case studies
59.  To get people to sign up to your webinar at gotowebinar.com
60.  To share customer testimonials
61.  To run a poll or survey using surveymonkey.com
62.  To advise others of bad payers / bad debtors
63.  To point people to your latest article on Business-Scene.com
64.  To tell people about ping.fm
65.  To tell people about your new listing on reddit.com
66.  to tell others what the best sellers on ebay are
67.  to link to your ads on Friday-ad.co.uk
68.  to encourage others to subscribe to your group on facebook.com
69.  To share financial market info from http://uk.finance.yahoo.com/
70.  To ask for ideas, suggestions and recommendations for new products
71.  To share a Spreadsheet via Google Docs
72.  To Tell people how to book on your next webinar
73.  To share your diary and get your appointments booked up
74.  To give your feedback of a workshop or seminar you attended
75.  To demonstrate to journalists how responsive your network can be
76.  To say thank you to people you care about.

This content is not written by me. I just edited it I found this written in a comment by a guy named  Frazer, but could not contact him for a quotation or follow his broken link.