Muxtape allows you to make and share mixtapes, only without the tape and in mp3 form.  Create a free account, then upload and arrange up to 12 tracks.  You’ll then have a custom URL to share.  Users can also subscribe to other user’s RSS feeds and become “fans” of muxtapes.

Go check out the Climate Time Machine, an interactive thingy from NASA.  If you have speakers or headphones you may want to kill the somewhat ominous music that starts by default.  Why do sites still do this?

Choose either Ice Melt, Sea Level, CO2 Emissions or Average Global Temperature from the menu to see — in graphic detail — the world in a world of hurt.

Interior of The Washington Court Hotel in D.C.

Snowmass Village, CO

Check out EveryScape.com if you haven’t already.  It’s kind of like Google street view — serving up seemless panoramas of select slices of the world — only with EveryScape, you can also go inside (certain) buildings and look around.  There’s a good write up about the site and service at Boston.com.  My favorite feature is “AutoDrive”.  Turn it on and you can roll down Rodeo in your chair without clicking.

Wowio.com offers up free Ebooks in the PDF form.  I heard about this site from the I Read Comics podcast.  And rightly so because Wowio serves a good number of comics and graphic novels from scores of publishers.  The absence of DC and Marvel proves not much of a surprise.  But many indie publishers have signed up.

The sign up process could potentially hold you back.  With three ways to sign up, I chose to enter my email.  Wait, what?  What’s so hard about entering in a email?  Well, Wowio won’t take free email address like hotmail, yahoo, gmail, etc.  But this is most likely the way to go if you have one.  Otherwise you have to enter a credit card — albeit for authentication purposes only — or send them a scan of an ID!

After signing up the download process is simple and painless.  I was quickly reading the current most popular comic on the site: Singularity 7.

Singularity 7, as described on the publisher’s site:

With the Earth laid waste by an assault from microscopic nanites, humanity hides in underground cities. But those cities are being destroyed by the “Gosiodo” -machine beings engineered to convert the remnants of humanity to the will of the nanites. It’s up to seven men and women, seemingly immune to the nanotechnology, to fight back… before there’s nothing left to fight for.

THIS JUST IN:  Wowio, apparently overnight, shut down the site and announced they are “going global”, retooling the site and will be back mid-July.  The site now looks like this:

Pictured above: a horrid screengrab from the gadgets section of Alltop.com on April 4, 2008.

Alltop.com aggregates all the top sites on the web.  Its main page lists 10 main categories:

• Work
• Living
• Culture
• Interests
• Geekery
• People
• Good
• News
• Geos
• Sports

Choose a subcatagory, let’s say gadgets (like the screenshot) under Geekery, and Alltop spits out headlines from related sites and blogs — ranking the most popular news at the top, go figure.  Hover your mouse over the headline and you get a quick snippet of the post.  Click to read the whole thing.  Hide feeds by clicking the “x”.

A similar site, Popurls, supposedly inspired Alltop.