Twitter
Photoshop
Windows Live Writer
Windows Live Gallery
Wordpress
Webshot
Opera
Safari
Google Reader
Gmail

First, last and in between.. It just has to be Twitter. I think it’s the nexus in my out of SL online presence. Simple, versatile and whatnot.
Since I rely a huge bit on mobile services, as in “being able to reach from and use on an ordinary mobile phone with no iSomething in its name, and using a normal European provider”, Twitter, together with Twittermail, Tiny Twitter and GTalk Mobile (The both latter java apps for your mobile), it is simply where I want it, when I want it, any way I want it.

As for feedreader, I used to use Googlereader (also mobile version), but have more and more come to rely on Netvibes (www.netvibes.com). With the tabs for organising content, I use it for notepad, link collection, feeds and a couple of widgets. They also have a mobile version (surpirse), even if not all widgets are available.

As for inworld tools, when it comes to blogging on the spur of the moment, and Twittering, I have to recommend Ordinal Malaprop’s Twitterbox and SLurlBlogger. Great tools, open source, and full permissions. This meant I was able to link them to my own HUD application, so instead of 3 spots, they only take up one.
BlogHUD is great, I tried it several times. The main reason why I stopped using it is the design of the site, shame to say. Guess I am too much of a control freak.

And I share your feelings and maybes regarding Facebook. Perhaps it is great for people not wanting to bothering with tweaking things or installing plug-ins, or whatnot.
I have a profile on FB (until it gets deleted, since I am there as a real person, not a Real Life With Citizenship Number Person) but I am really not active. It gets sort of tiresome with the endless trollings in group forums (Haven’t I seen this somewhere else before?) and the Super Poking Zombie Battle requests.

I used to use Picasa for pictures, since I have so much on Google anyway. But Flickr, that is a great way of handling your pictures. It is not just simply a picture collecting site, but also home of several communities. And again, great mobile site, where you can upload pics as well.

Box.net has a freebie account of 1GB. I use another service professionally, for storing and sharing files, but Box.net is growing on me. Apart from sharing the usual way with links, they have great widgets that you can plug in, like on Wordpress or Netvibes.

Wordpress is really nifty, it did have a major hiccup (the free version) for some time, when trying to post from a mobile outside the US, but I think it is fixed now.
One other app/service that I like though is Tumblr (www.tumblr.com), which also has versatile ways of posting, collecting feeds from other places and a good API.
And thanks to the very talented Kisa Naumova, you can use that one in your profile, under the webtab. I really recommend checking it out.
I still have to find a good use for my own Tumblr page, mind you.

So, all in all, if I stretch this to be a Top Ten list, it has to be

10. GTalk (Because of mobile version + Open standard, XMPP)
9. Box.net
8. Wordpress
7. Tumblr
6. Flickr
5. Netvibes
4. - 1. Twitter

Honourable mention gets the tools from ZoHo, not just their Writer and Spreadsheet apps, but Project managament tools, Database tools etc.
It’s a pity most of my RL colleagues and customers still rely on sending 4MB Word and Powerpoint files through the mail and refuse to learn how to use these tools.