I first met Amit Kapor when he was COO of MySpace. A couple of years ago he left to start a new company, which he wouldn’t tell me anything about until now. Gravity.

So, what does it do? It is building new interest graphs of what you talk about on social networks. First on Twitter, because its content is discoverable publicly, but later others.

What does that interest graph look like? They made a poster out of mine. It’s on this post.

So, what can that be used for? Well, in our first look with Amit he tells me what their plans are: a customized newspaper built just for you based on what you Tweet about. Very interesting idea, can’t wait to see that come out in the next month or two. In the meantime, though, try out their new tool to show you what it’s finding, give them feedback, and watch the video to learn about their thinking.

This article is reprinted from Building43.

Simon Crosby is the CTO for Citrix’ cloud business. Don’t know what he runs? Citrix’ Xenserver is underneath Rackspace Cloud, OpenStack, as well as Amazon’s S3. In other words, Crosby sees the infrastructure that runs the most important cloud infrastructures. Here Robert Scoble sits down with him for a long talk about what he’s seeing. Some things that come out in this 37-minute talk?

1. Enterprises live on apps, and those apps need to run both as apps on desktops, but increasingly as SaaS apps running on cloud.
2. iPads and iPhones are really hammering at IT departments to get them to change their practices.
3. The importance of open source and open approaches, compared to VMware and other approaches.
4. How businesses will get into the API world, which enables more apps like Siri.
5. The enterprise’s biggest challenge? Security.
6. 3.5 million desktops have been virtualized in past few quarters, which lets IT departments be more secure, even with laptops that can get stolen and/or lost.
7. He lashes out at VMWare, saying it’s a “factor of 10” more expensive than Citrix-based clouds.
8. Why Citrix is working with OpenStack and NASA to support opensource-based clouds.
9. How Citrix sells via different channels, direct to enterprise for some, through service providers, for others.
10. What he expects in 2011 in enterprise adoption of cloud technologies and how Apple is disrupting the enterprise. 40% of Citrix’ employees are bringing their own devices to work “incredible savings.”
11. What should developers pay attention to.
12. What mistakes enterprises are making when they get into cloud.
13. How OpenStack changes the world.

More info:
Citrix Xenserver website: http://www.citrix.com/English/ps2/products/product.asp?contentID=683148
Citrix: http://citrix.com/
Citrix on Twitter: http://twitter.com/citrix
OpenStack: http://openstack.com
Rackspace Cloud: http://www.rackspacecloud.com/
Simon Crosby on Twitter: http://twitter.com/simoncrosby

Full interview:

You probably know that I wish the world would move off of MIcrosoft PowerPoint. It is definitely the king of presentation software, but there are a raft of tools that are better now, especially if you look at SlideRocket and Prezi. I previously did a video with Prezi’s CEO, but I’ll admit that Prezi is a bit weird for someone coming from PowerPoint. Read that as “hard to learn.” Why? Because it uses a totally different metaphor than slides for doing presentations. You should watch the video I did with Prezi to see what I mean.

But there’s another tool out there that has a lot of advantages over PowerPoint: SlideRocket. Why? Because its system is totally web based, which brings lots of good things to teams that need to collaborate together on presentations (PowerPoint really falls apart if you want to make sure that slides copied out of one presentation are kept up to date in all other presentations, for instance).

Anyway, tonight, they are announcing that SlideRocket is moving to HTML5, so you can play presentations on an iPad, for instance (previous versions were Flash-based). See the new features and how far SlideRocket has come.