When I realized Ghostery had a simple Opera extension version I went ahead and added it too! It's interesting to watch, anyway.

I don't have any alternate recommendations for webmail, alas, the last time I went looking I didn't see anything that was free and did what I needed it to do - my understanding is that webmail is really expensive to run, so you might have to either pay or but up with an evil megacorporation. Which is why I'm sticking with gmail. (I have my "being an adult" stuff on Gmail and my fannish/etc. on Yahoo because it seemed like a good idea to make sure I couldn't possibly cross the streams, but then I somehow ended up with a Google account under my Yahoo address anyway, which I deleted yesterday with great prejudice. But MS/Yahoo is only slightly less scary than Google.)