Blog posts in two languages?

I have one site that is both in English and Portuguese and it is a pain in the ass to be honest with you. I use a Wordpress plugin (can't remember the name but there are plenty) that automatically changes the text when people change the language versions of the site. The keyword research is very hard and you basically have to almost write two separate articles... If I were you, I'd focus on English only!
Good luck
Art

I found this script: WPML - The WordPress Multilingual Plugin

seems good, but does this translate keywords too??

WPML is one of the best plugins to use on multi language websites. Some of Wordpress themes support WMLP. You need to enter the translation text into the related area.

You may find more at their features page.

But this plugin translate keywords in english too or only articles?

This might seem like a good idea, but there aren't translation tools around which translate perfectly as if you would write the article yourself.

So the result will be that your translated content will at best look funny, which will result in people not taking your blog seriously.

I feel it's a better idea to hire a translator, perhaps even on fiverr to transalte your articles, if you really want to crreate a multilingual blog.

Thanks guys. I've got an Idea and I told to my blog team:
as for starting I wanted to make a new blog, where articles were translated to english (including keywords) but I see that this can be pain in the ass (also cost $$ for plugins/translate script), also it can be a mess for people who want to read the blog in another language (same blog with translated articles) and so main blogs having traffic from EU and then translated blog with USA/UK traffic may be a complete mess and not looking as a professional blog.

So This is my new Idea that I think will work better:

Me and my blog team will continue to write articles for the main blog (EU traffic) and each person of my blog team will make a new personal blog/youtube where we'll translate the most interesting articles/videos to get USA/UK people traffic (including keywords). This way, each person of my team will have their own professional blog page and every blog will redirect the traffic from USA/UK to main blog with EU traffic. I think this way is better and can give a better view of our blog (computer/web tutorials niche) and get people from all over the world interested in our articles, also we can get a more self-exposure for Computer companies and look as professional team with my blog Team and self made blog for each people of my team.

I hope my Idea is clear because english isn't my primary language sorry guys..

I guess you are trying to capture the traffic from local markets and that could be helpful. I suggest that you also use plugins to make it easy on yourself to create the translated pages. Definitely, having the multiple sites will help your main site. So I think you are in a win-win situation.