Feedweaver is a free web service which allows you to create your own personalized RSS feeds. You can create your own feeds by combining source feeds from your favorite websites, and use filters to choose what you want in it. This means you can combine feeds from different websites and get a single feed based on your preferences. For example if you want to get all the updates on Windows 7, then combine the feeds of all websites or blogs updating on Windows 7 into one feed.
You can also customize your combined feeds by using keyword filters. You can easily share your feeds with friends by giving them the feed’s URL, and they don’t need to login to view the actual feed, as all the feeds are available to everyone who knows the address.
Once you create the free account with Feedweaver, you can start adding the feeds and create a category for the combination of feeds.
Each feed is accessed through an unique URL using its access key, which can be changed in the feed’s settings. Once you create the unique URL, users are not required to login to see the feeds as the URL is public.
Feedweaver is a good way to combine feeds from various websites and worth trying.