Now Android Market is getting its own glimmers of hope. Edward Kim, who built the application “Car Locator” around five months ago, has just announced that he’s pulling in $13,000 a month from the application, which “started as a little side-project while [he] was vacationing with [his] family”.

Kim writes that the free version of the application has been downloaded around 70,000 times, while the paid application has been downloaded 6,590 times. The price was initially $1.99, but he moved it up to $3.99 (he notes that despite doubling the price, the number of downloads didn’t decrease too much).

So what was Kim’s secret to success? Well, a big part of it seems to have come from the fact that Car Locator is now a featured app on Android Market, which means Google more prominently displays it to users than ‘normal’ applications. Getting featured increased the app’s revenue by over four fold. This probably comes as bittersweet news to developers (you can’t exactly count on being featured by Google), but Kim says that he’s ranked between 100 and 200th place in the Market’s ‘Paid’ category, which means that there are probably at least 100 other applications seeing similar success.  Android Market is still far behind the App Store in many respects (except for openness), but it looks like it’s finally starting to mature.

Kim is very optimistic about the future of the platform, telling me “Android appears to have grown enough that developers can make some money off of it, but there’s not SO many developers that you’ll never get noticed.”

Here are some of Kim’s other observations:

• The application was netting an average of about $80-$100/day, until it became a featured app on the Marketplace. Since then, sales have been phenomenal, netting an average of $435/day, with a one day record of $772 on Valentine’s Day. Too bad I didn’t have a Valentines date this year — we would’ve gone somewhere real special!
• There appears to be clear peaks on the weekends and during holidays. This was always my hunch, but I think I can finally say this with certainty since the signal-to-noise ratio is much better now.
• Some may be quick to point out that a featured Android application is only able to net $400/day, while top iPhone apps make thousands. But the Android market appears to rotate applications in and out of the featured apps list in some psedo-random fashion. Every time I open the Marketplace app, the featured list is different and most of the time, I don’t even see my app on there.
• The price of the application was increased from $1.99 to $3.99. I ran a few price experiments and was surprised to see that though I doubled the price of the app, the number of purchases decreased by much less than half. Android users appear to have a willingness to pay more than a couple dollars for apps.
• Piracy appears to be an increasing problem. A quick search for Car Locator on Twitter reveals links where people can download the .apk file without paying. I tend to have the same attitude on piracy as Balsamiq, so I’m not too worried about it, but I would love to hear some typical statistics on Android piracy.

Crocodoc is an extremely straightforward service, and you don’t even need to sign up for an account to use it — just upload a document, and a second later you’ll be in the Crocodoc editor. Markup tools include Sticky Notes, a highligher, text strikeout, and the ability to leave your own comments (a ‘pen’ tool is on the way). Editing a document should be very familiar to anyone who has used Adobe Acrobat or Apple’s Preview. If you’d like to try marking up a sample document, you can use this demo.

By default, the service assigns each uploaded a document a unique, “unguessable” URL, which you can use to share the document with friends, who can mark it up and add their own comments. But there’s one catch to the free version of the service: if you lose the document URL, that marked up document is lost for good (remember, you didn’t create an account to sign up).

Fortunately Crocodoc also offers a ‘Pro’ version, which lets you create an account that includes an archive of your previously uploaded documents. It also allows you to password protect your uploaded docs (as opposed to just relying on the hard-to-guess URL for security), and to use SSL encryption. Pro Accounts cost $8/month or $36/year. And for companies that are wary of uploading sensitive files, Crocodoc offers intranet deployments, which means that these customers can run it inside their firewalls on their own servers.

My only gripe about Crocodoc is the limited number of collaboration options  — you can share your documents with as many people as you want, but everyone will be editing the same one, which seems like it would get messy fast. This will be fixed in the near future, when Crocodoc starts allowing you to review edits on a per-user basis.

Crocodoc’s still quite basic, but that might be exactly what its customers are looking for.  And they may well be willing to spend $36 a year if it means they’ll have to print out fewer stacks of paper.

In 2008, productivity suite empire Zoho launched a simple invoicing tool, unsurprisingly called Zoho Invoice. Today, the startup is releasing a new version of its Invoice, dubbed Invoice 2.0, that has a fresh user interface and provides a more open application.

The fact is that over the past two years, there have been a plethora of online invoicing startups that have popped up and Zoho is catching up to its competitors with version two of its offering. With this update, Zoho has redesigned its UI making it easier to navigate and customize to fit the look and feel of a business’ design. Zoho Invoice will also allow users to record separate expenses they incur while serving particular clients (like travel, material etc).

The version also has full organization, multi-user support so that several employees can access and collaborate on invoices for a particular account. And Zoho has opened up the API for Invoices to that developers can integrate the application into their own applications. Additionally, Zoho features useful bells and whistles such as multi-currency support and email history which tracks your email exchanges with your clients and other users.

The plus of using Zoho’s invoicing application is that it ties into its other productivity applications seamlessly. And its affordable, with a free version and the most expensive version coming in at $35 per month. Last year, we wrote that Zoho has continued to implement an intelligent strategy to launch new products and add-ons to its existing offerings, partly to keep users from flocking to Google Apps and Microsoft’s Web-based version of Microsoft 2010. It looks like Zoho is continuing this strategy in 2010.

Last year, startup unveiled a new version of Zoho Reports; launched a deeper integration with Google Docs; rolled out Zoho Discussions, a online forum tool for businesses; and debuted Zoho Recruit.

And over the past two years, Zoho has added support for Sharepoint, mobile, Google and Yahoo IDs and group sharing. According to out latest states, Zoho has definitely reached over 2 million users is even catching the attention of its competition. Hopefully, 2010 will be as fruitful as 2009.