(blush) - i don't speak portuguese, but all your javascript is written in it...
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i was just suggesting that when you have links (like on the main page) which point to 3rd party sites, you could add a "target=_blank" -- so it doens't impact my windows here.
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i did find the link to the comment threads - and those don't really need the "target=" (because I'd likely hit the back-button to get back to the main page -- but often links to blogs/articles/etc may go throuh a couple re-directs, and the back button doesn't always work as well.
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I get @zorro's point too - but if it opens a second window/tab, you can close the new window/tab and it (should) free up that memory.
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--skutlbot
Boa sorte com seu novo site!