What was this service/extension called?

Since I can’t think about a search string that would bring it up on the first page in search results… There is a service or some Firefox extension that let’s you use sites where you’d normally need to register but they keep one account in many places and let you use it so that you don’t have to register yourself only to post once for example. Anyone knows what I mean?

You must be joking, right? (Silverlight for Linux :))

While browsing around with Firefox in Kubuntu I was presented the following offer:
picture
How stupid is that? And why would I even want it? At the moment I’m rather happy with my system, I use Vista on the same machine rather rarely because it is just so slow while Linux is pretty fast and everything I need in everyday use is working. That includes wireless, USB, printing over LAN to a printer attached to XP machine and accessing XP fileshare. Figuring out the last one in Kubuntu didn’t take much time, while in Vista, well after couple of searches I felt I have better things to do with my time. Sure I might eventually take the time to tweak Vista to be faster, but I doubt it’ll be any time soon. I like that I don’t have to bother with typical Windows updates that interrupt usually at the most inconvenient time possible. Sure I update both OS-es but Kubuntu’s updates never disturb me, I’m just notified that there are updates available. The only bugger at the moment would be temperature that is higher in Linux compared to Windows.

Why does Google do this?

I have recently had some searches that give results not expected or wanted. Apparently at least on some occasions Google considers character with and without accent to be equal. In my experience it can be rather annoying. Unfortunately I can’t remember any of my original searches so I made one up. Let’s say you’re searching for “siil naha” (without quotes in search) then you also get results containing “näha” even though it is completely wrong because the meaning of those words are very different. I can understand that with “Émile” and “Emile” it helps but not with every word that has an accented character.
Edit: while I was typing it in I also realised what would be the solution. You can use “siil naha -näha”. Of course without quotes if you’re not searching that specific phrase (and why would you search for such meaningless phrase). Now that I think about it, it would be nice if Google displayed some kind of notice when it uses accent-insensitive search and a clue how to change it to accent-sensitive one. Perhaps some checkbox in advanced options?
Edit 2: after some more careful looking, results containing “näha” also contain “naha” either in text or in links to result page. However emphasizing both words in search results can be confusing. It certainly was for me.