It's the PriceSpy one, Opera keep forcing it into my speed dial, I keep removing it. If it was an every now and again thing I wouldn't mind but it's about a once a week thing.

I'm getting very tired of this bookmark appearing on all my Opera installations every week or so. I have six installs of opera (some linux some windows) and when it appears on one it'll be on every other one if I boot into that machine. Pricespy may not be a malware/adware site, but that bookmark is behaving as such.
Opera seem to be intent on finding ways to make it less appealing to use there browser. Thankfully there are choices.