sites like blo.gs?

You might try Blogrolling. I don’t know of any others though.

https://www.bloglines.com

hrm, both those sites seem to display RSS feeds.
the cool thing about blo.gs that it has a sidebar which shows latest updated sites and when ya click on it, it brings you to the site.

Well I know that Blogrolling also gives you a little piece of code that you can insert on your site that will display your list of links. I’ve used them before and I know that that’s what they do. I’ve also seen plenty of other sites with blogroll lists run by Blogrolling.

it’s not exactly what you’re looking for, I know, but if you’re a music addict like myself you should check out https://www.bandnews.org .
there you can read instantly what bands write at the moment and create your own rss feeds from your favorite bands (even if the bands don’t provide rss). very nice!

yeah the blogrolling also has a sidebar available for in FF.
but seems to be updated very very slow. and you have to manualy add the sites.