check out sitebar:
https://sitebar.org
Our host can setup a private electro tech version, or you can use the public version straight from sitebar.
Once you get yourself an account, you sign in and can start adding sites to your sitebar account, organizing them as you see fit.
I have probably 100+ bookmarks on my account, and easily access them from any computer, I just sign-in to sitebar, and there they are. On my home computer, lab computer and office computers, I have setup a feature of sitebar called "Live Bookmarks", which are RSS feeds from the sitebar server. I can generate these feeds for specific groups, etc, based on whats stored in my account ... if I add a new bookmark at work, it shows up on all my other computers as well, automaticlly.
best of all, it's completely free, and there are no banner ads or spam or anything nasty like that.