Tell me if you've ever done this: you're playing with a map, or you're tweaking your favorite online radio station, and you go to save it to your bookmarks or your favorite social bookmarking service. The next time you go back to this site, all the changes that you so carefully crafted? Well, they're gone. Why? Because that content you were playing with is dynamic, while the URL itself is static. One changes, the other does not.

That's what I love about Iterasi, a new service that not only saves the URL in your carefully crafted cache of content, but saves the Web page itself; a virtual snapshot of the last time you visited it, with all the tweaks, changes, or additions you made still there and ready to be accessed. Simple, elegant, and incredibly useful.

More about saving your stuff on the Web

• Save Videos for Later with the YouTube Quicklist: YouTube is addictive, but what if you don't have time to watch all the videos you want to watch? Save them to your YouTube Quicklist for easy viewing later when you're able to kick back and relax.
• Instapaper: Don't have time to really read what you're looking at? Save it for later with Instapaper, a simple bookmarking service.
• Bookmark and Share Sites with Furl: Basically, Furl gives you the ability to create your own searchable database of your favorite sites. Furl is similar to del.icio.us, in that the primary task that you can use Furl for is as an online, access from anywhere, list/article database.