Would this be a good idea? That for each keyword I target I make new free blog with keyword in domain and in content. And then put few articles and link to my website on it. And maybe have one ad on it. What do you think?
Blogs need a little beef in them. Have you considered using a blogger service like USWeb or Pay Per Post to do what you are describing for you? If you don't have a lot of content in your blog and don't get it submitted to blog sites, it won't get help you too much. It's a way to generate links, but I'm not sure if they would be worth much. If you use the blog to generate interest, it can help your site by gathering relevant traffic, but that will take a lot of work.
yes but if u choose to make blogger blogs and regester each blog with different emails that will help you lot.
This sounds do-able. Make certain that your site is content rich and not filled with endless blather about that one key word or phrase. You may get penalized if your site reeks of spam.
waste of time IMO...why spend time for crap link while you can create quality content so that other linked to you?
Nod, it's easier to work on the thickness of your site and let it get links naturally, but a lot of people do push for instant rank gratification. If your goals are longterm, building a thick site will be better in the long run, but it takes time and patience.