TwiPing is free source for increase your limited traffic but if you purchase more tarffic then you will pay.
One issue is that Twitter normally limits the number of people that you can follow to 2,000. So, choose who you follow wisely.
Use the Search options. Search for people in the same niche as you. You need to be patient. It takes time to get many followers. You will also need to tweet a lot to make sure that they not unfollow you again.
twitter is social networking, not like a business forum. but by following a lot of friends who engaged in online business, opportunities will be open every day.
The first part of your question is easy and I personally use TweetAttacks to build my following and find the people in niche with large followings and follow there followers. The second part of your question I'm not sure about, but you can probably make a few quid with a good niche related following! Mark
If you build up a nich related following then. the changes are you'll make a few quid. Keep up the good work. Mark
Just start following others that you find through hashtags. They may follow you back if they feel you offer value.
There are several websites and softwares that you can use to get followers and find followers, which is a good thing. The making money part depends on yourself, it depends how you want to make money with it. Google some Twitter follower stuff and you'll come up with thousands of hits, try and find the best one for you. Some of the softwares/websites are paid or have trials, so you might want to be wary.
To make money from followers you have to give them value. Maybe you have an interesting blog article or ebook you can offer them.