What would you do?

I would invest in stock, if you research what you invest and limit the loss and gain you can double that money in a month. Blogs and seo... I have some experience with that too but so far haven't earned a dollar. You have to know so many things, spend loads for promotion and 700$ is better than nothing but you earn money if you have 1000 visits per day or more and even than you'd earn a dollar or two. Try trading with trading platform I use, you get 25€ without any deposits or card info...just if you register. Use it for a month or two to learn the basics and than invest 100. I invested 100 and made 150€ profit so far (in 4 months). Most of the time it goes up and down, than one day it goes up for 5% and you earn 50€ in a few minutes. If you set the upper and lower limit o the graph, research and put some effort in it you're on your way to earning huge profits. I'll be happy to guide you, and even if you don't invest you can earn with the initial free money so it's risk free. Good luck, check my profile

You could invest this money in some investment site and let the money work for you. You will get passive earnings - easy money. But you should only choose investment site which have real business and real products in the background which deliver profits for all investors. This is the key, because if you invest in typical HYIP site, you will probably lose your money. I recommend My Traffic Value.

I think the best way to do and more that money is to invest in online forex trading. Those kind of online money making program is good but my problem is that I have no enough fund to invest with those program and have a lack of knowledge also.

be clever to invest and earn as Forex is very risky,me involved in this business for a year.

You wouldn't need to invest $700 for a blog. It may only cost you less than $100 for a year's cost of domain and hosting. You wouldn't even need to pay for hosting fee if you use sites like blogger.com to host your blog. As for investing on some programs online, the key is to diversify to prevent total loss should something go wrong with your plans.

If that is your field of specialization, then there is a bigger probability that you will earn more on that field. The only thing I can suggest so far is that you have to invest only what you can afford to lose. Personally, I would not invest online because I am not very familiar about investments. I will invest it offline because I am more knowledgeable on offline investments. I worked in a cooperative before I entered government service, which main business is lending. I admire you for having such knowledge with SEO and blogs. I also would like to know about it. Have a nice day!