I think that with global networking taking over, that a lot of languages maybe will merge into one.
This would only happen with languages that use the same alphabet. I can see, in a few hundred years, French adobting so much of English, that they could be considered dialects of the same language.
I know a lot of French people are worried about 'Franglais', which is why they make up new french words for stuff like 'Discman', even though every French person says 'Discman'.
-= Out here in the fields, I fight for my meals =-