Take a look at LinkedIn Discussions and LinkedIn Answers; if you can contribute to a good discussion or help answer even one of the questions, your comment can also introduce you to new, potential customers.
If you are in small business, now is a good time to post your profile on LinkedIn (if you haven’t already).
Next, join a group in your industry on LinkedIn, then look at their current Discussions. If you can add to the discussion, it is a great way to network and meet new people, creating the opportunity for new business leads.
And then take a look at LinkedIn Answers. Like Jason Falls says in his recent article How To Drive Business Leads With Question & Answer Forums, “People are driving leads using Question and Answer forums like LinkedIn Answers, Yahoo! Answers and Answers.com. . . . In essence, the best practices (theirs and mine) remind you to be helpful first, don’t go in trumpeting your sales pitch and focus on long-term relationship building and benefits rather than seeing a sudden influx of leads because you clicked a button on a website. Nothing is that easy. It’s like being at an off-line networking event. You work at it a while and you get results.”
And you can use the same principle at other open forums.
Get started by reviewing the questions. Find one that you are interested in and then do a little research, so that you can include some references in your response. (The answer that you provide with references will be much more impressive than sharing your best guess at the answer, and will make a better impression for you and your business.)