If you have good PR sites, you can sell Blogpost from those to make some money.

Try Selling Links On Your Site On Fiverr
You Will Be Able To Make Some Reasonably Good Money Out There

Fiverr, article writing (if you can write), Adsense, link building, learn how to build Facebook fan pages, learn how to build quality Web 2.0 pages, etc.

Thanks everyone but i am planning to add advertisement banner links(paid). Can any one say how can i get..

You said that you are interested in Data entry work too.
you can check Kolotibablo.com.
It is captcha work.
It is very easy and I am also using.
you have to type the letters that displayed on your screen. That's it.
But the only problem is it pays us very less for a lot of work.
So I am not interested and I did it earlier but stopped it now as I am getting bored to do it.
We can't get enough result for our work.

It is better to improve our typing skills while getting some money too.

The best way to earn money online is Micro Niche Sites.
If you want personal help in Skype PM me your skype user name.

One of the fastest ways to earn money online is by offering services. It can mean working every bit as hard - and sometimes even harder - than you would be doing with a traditional, offline job. But there will be no nagging boss, annoying colleagues, rush hour traffic, etc. to deal with. And not only that, you will hopefully be doing something that you enjoy.

I think blogging is the best for you. If you're interested in taking it further blogging for bucks, if you will here are five strategies that could turn your blog into a moneymaker.
1.Sell advertising 2.Help sell others' products 3.Solicit contributions 4.Market your services in your blog 5.Use a blog to deepen your existing customer relations.

If you own a blog, Adsense is the best!
Don't forget to submit your offers to fiverr and some freelancer websites.
Affiliate marketing would work great if you also have a blog and choose a nice niche!

Here is nothing to waste valuable time , just join odesk dot com
and apply for seo types job and they will pay you good.
if you work good then you'll get good feedback also.

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Better you can try Affiliate marketing, Blogger link sales, guest blogging, Article writing etc..