Wallwisher lets you, with very, very minimal registration, create a “wall” where you can place virtual sticky-notes. You can allow others to also place notes on the board, or keep it so that only you can do so (which is what I would recommend for students). The sticky-notes can include images you grab off the web, videos, or websites, and you can add text to them (you can also just include text without adding anything else). Each sticky has a 160 character limit for text.
Wallwisher appears to me to be one of the most useful Web 2.0 sites I’ve found in awhile. It can be a great place for students to use higher-order thinking by creating categories of images (and descriptions) or short texts they copy and paste (or write themselves). It can also be used as a site for social bookmarking of websites if you just right-click the website you put inside the sticky-note and then click on “open in a new window.”
I’ve explained in The Best Social Bookmarking Applications For English Language Learners & Other Students more details on how a site like Wallwisher can be used by English Language Learners for categorization and website bookmarking applications, and I’d encourage you to take a look. The other sites listed there can be used for similar purposes, but Wallwisher appears to be the easiest and most user friendly of the bunch.
I do have to share one caveat — the first couple of times I tried it I couldn’t get the sticky-notes to appear. However, it worked everytime afterwards. It’s a new site, so it’s possible there are just a few glitches they’re still working out.
Thanks to The Make Use Of blog for the tip.