You try to achieve few things:
✓ promote yourself by having something interesting to say
✓ reference and make friends with others, they might be likely to promote you in the future e.g. (e.g. @UkiDLucas)
✓ promote event, or review URL (e.g. bit.ly, goo.gl)
✓ promote event #hashtag so people can find more posts about the topic
✓ write posts in about 120 characters; leave about 20 characters so people can quote (re-tweet) your post without shortening it
