This should go without saying, but I still see a lot of bad examples out there. From time to time I check my follower list and sometimes it really surprises me how many words some company use just to tell nothing.
“We sell clothes”, “we organize events” or “we fix your homes” will suffice. Don’t go over the top while trying to be funny or to promise things. Just be blunt & straightforward – people will respond to that. And, it will be much easier for others to find you via twitter or web searches.
Social media can be a help in personal matters as well. If you want to connect professionally with other people as a person, not company, the same advice applies.