Welcome to Opera Talk, a new column here at Choose Opera where we will hightlight employees and community members. 
First of we have Senior Developer in the Desktop team Petter Nilsen. Straight from his holiday, he took time to answer our questions about his favorite features.
Choose Opera: Who are you and what do you do here at Opera?
Petter: I'm a Senior Developer on the Desktop browser. When I think about it I realize I've been working for Opera for 5 years in September. Time flies when you're having fun!
In these 5 years, I've worked on BitTorrent, the content blocker, Speed Dial, Tab Thumbnails, create search and search customization, Opera Link, Opera Unite and many other features.
Choose Opera: What is your favorite feature in any Opera product?
Petter: Of all the features we have have I would have to say Speed Dial. So simple yet so immensely useful and powerful. Can I mention more than one feature I love? If yes, I would like to add Opera Link synchronization of bookmarks, Speed Dial, searches, etc. and mouse gestures.
Choose Opera: And the feature you most recently discovered?
Petter: I would say User CSS of certain web pages. I use Dragonfly to find which styles are used on a page, then I write my own style sheet to override certain styles. I can make a page look more like I want.
Choose Opera: Seeing how you know a lot about features, care to give us a scoop?
Petter: As you know, Opera 10 adds the possibility of adding more Speed Dial positions, up to a total of 25. 25 has been picked as it seems to be a reasonable maximum number, but users can of course add more by editing the speeddial.ini located in their profile directory.
Another little feature that currently doesn't have a user interface within Opera is the possibility of adding custom transparency to the Speed Dials itself. This can be useful if you have a particularly nice background picture and you want to see more of that and less of the Speed Dials. Quit Opera, open speeddial.ini in a text editor and add:
[UI]
Opacity=50
50 means 50% which means all the Speed Dials will be 50% transparent. You can make them invisible by using 1 as value, but 50-70 seems to be reasonable values. A word of warning though: This is a experimental feature and might or might not be in future versions (but it works in Opera 10 Beta 2). It might also introduce a performance penalty when painting the Speed Dial on some computers and operating systems.
Choose Opera: Thanks! And while we try out that neat trick, we thank Petter for taking the time to chat with us!