What is a Webmark?

A webmark marks a location on the web, just like a bookmark marks a location in a book. It's a web page, whose address you want to remember for some reason. Webmarks are often called bookmarks or favorites, especially when the webmark itself is stored offline on your PC.
What is A1-Webmarks about?

A1-Webmarks is a free service that combines the convenience of a personal webmark server with the power of social webmarking.

The site has a lot of options of how you can organize and customize your bookmarks. It has a barebones look and takes a bit getting used to.