Last week the folks at Tumblr hinted that some changes were coming for the platform, and the first signs of that are emerging with a huge update to how users can customise the look and feel of their Tumblogs.

For the less-technical minded there's now support for customised fonts, and images in themes that can be edited directly within Tumblr's Customise window and if you're a code-minded user, then the new options for Booleans will definitely come in handy, Having built a fair few Tumblr themes myself over the last few years, there's new options are some great additions to my favourite blogging platform.

As an aside, just last week competitor Posterous rolled out support for Tumblr's theme syntax. If you're using a Tumblr theme on Posterous, it might be a wise idea to check that the theme isn't using any of these new options as they won't work when ported to Posterous.

There are many ways to share your content online with family and friends. From Flickr to Facebook to MySpace, YouTube and Twitter, there's no shortage of ways, or platforms, to express yourself via words, pictures and videos. Several months ago I was introduced to another of these type of sites called Posterous.

At Posterous, much like these other sites, you can post words, pictures and videos via email from whatever device you happen to be using -- be it iPhone, iPod Touch, Blackberry or desktop computer. At first, I was a bit skeptical about how Posterous would distinguish itself from the other sites and platforms I use regularly.

However, once I started using Posterous and had my own page, I was quickly impressed with its simplicity, its design and its usability. Soon it became my site of choice for posting images on the go from my iPhone and may very well replace Flickr as my photo site of choice in the near future.

Recently, I talked with Sachin Agarwal, one of Posterous' co-founders, to get all the latest info on the site, how it came to be and where its going.

CHRIS ULLRICH: First off, let's talk a bit about your background. Where did you grow up, go to school, work and develop the skills to do something like Posterous?

SACHIN AGARWAL: Garry and I both went to Stanford and majored in Computer Science. When I graduated, I worked at Apple on Final Cut Pro for 6 years which was all the way up to starting Posterous. I was building the real-time playback engine and effects architecture.

That didn't have a direct impact on the formation of Posterous, except that we're definitely Apple people at heart, and we want to be the Apple of blogging. We want to make the simplest, most beautiful site out there, and make it accessible to the masses.

CU: When did you first have the idea for Posterous, how is it put together and when did it first go live?

Posterous is a new blogging service that's being touted as even simpler and easier to use than Tumblr. The process is extraordinarily simple: send something to post@posterous.com. Hey, look, you've started a blog. When you want to add something to it, send another e-mail to the same address. Simple as that. Supported attachments include everything from JPGs to PDFs to Mp3s.

It's not as if Tumblr is extraordinarily complicated, but Posterous presents some interesting possibilities. You can post your cameraphone pics and other moblogging material via e-mail, and have comments sent to you and reply to them on the go (again, via email). Also, we're not complaining about a blogging service that lets you skip past all those annoying signup processes. You already have an email account, so what do you need yet another login for?

Posterous obviously has to be careful about security, since forging email addresses isn't all that difficult. Michael Arrington offered a free TechCrunch t-shirt to the first person to forge a post on his Posterous blog, and the challenge was over pretty quickly. Posterous addresses these security concerns in their FAQ: "If we think it might not be you, we ask you to confirm the email before we post it. No matter what, you always get an email notification of every post we put online for your blog, with an easy link to remove the post if you didn't do it."