Then come the invitation crazyness, it started to evolve slowly but always in the right direction, last Apr 1st doubled and more the mailbox size, and added a web wysiwyg editor that is simply amazing in its simplicity, but there was always one problem for me. I live in an spanish-speaking country, and a lot of people (family, friends, etc) that i would want to invite to gmail had little or no english knowledge, so even for the very limited text in english that is in the interface giving them mail there would be more a problem than a favor.
But today gmail added the last piece of the puzzle. Now is multilingual (supporting 12 languages, well, 11 if you dont think uk english is an entirely new language compared to us english ) and i can start spamming with invitations around here.
What can be next for gmail? more integration with other google services? some kind of extra personalization/personal portal/etc for it? Whatever it is, they keep amazing me.