Learn 

The basics of RSS and social bookmarking were in 23 Things On a Stick. In this Thing, we go beyond the obvious uses of both to introduce tools and features that make these productivity tools even more useful.
 

RSS

RSS is a great tool for keeping up with professional or personal interests. Subscribing to blogs, news sites, and more and having the updates fed to you saves time. However, your RSS reader can become a drag, too, if you don't keep up and end up feeling "guilty" about not keeping up. Here are some tools that can help make your RSS use more efficient and useful.

Filter Your RSS 

Filtering allows you to focus on those items you are most interested and eliminate a lot of the noise that accumulates in your reader. These services will reduce the number of posts you get based on by tag, keyword, or other parameters you set. 

Receive RSS via Email, Text, Speech 

These sites will deliver your RSS feeds to your email, phone, or allow you to make a podcast of them so you can listen. 

ZapTXT lets you to monitor RSS feeds for specific keywords and get alerts as soon as there is a new article that includes specified keywords. Alerts can be set to be delivered to email, instant messaging, or mobile phone.

Other: 

RSS Forward--Forward your feed to email.  Another one bites the dust. Announcement via Mashable.

FeedMyInbox--Forward to email

Spoken Text--Text to speech RSS

Be More Efficient with RSS 

Beyond reading blogs and news, you can use RSS for keeping up on other things: 

ReminderFeed--Send reminder messages to your RSS
Simpletracking.com--Create a custom feed that tracksUPS, Fedex, USPS & DHL packages
RSSCalendar.com-Create a calendar, add events and meetings, and then share a feed for others
.Gov feeds--Keep up with official feeds of the US Government
Traffic.com--Traffic updates for major cities
rssWeather.com--Weather for Minnesota counties 

FeedMySearch-Turn your Google searches into feeds & get updates whenever a new result appears

Or, really increase your efficiency with Spreed, a site that will help you speed read your info.

Share Your Feeds 

RSS has become more social. Both Google Reader and Bloglines let you recommend or share feeds with others. Another way to share is to publish/print your feeds using a site like Tabbloid.

Celebrate! May 1 is RSS Awareness Day!

Delicious

Delicious was one of the favorite tools in 23 Things On a Stick. People realized the great convenience of having access to bookmarks from any computer, anywhere. To get even more out of Delicious, try the networking and search features, along with the widgets that make your Delicious account more visible to your readers. By the way, you may have noticed that del.icio.us has become delicious!

Search Delicious

There are a variety of ways to search Delicious from your browser address bar: 

To view bookmarks tagged with a specific keyword, type in:
http://delicious/tag/keyword 

To view bookmarks tagged with two or more keywords, type in:
http://delicious/tag/keyword+keyword 

So for example, if you want to look for sites about rss and productivity, type in:
http://delicious/tag/rss+productivity 

If you want to narrow the search even further, you can include four terms:
http://delicious/tag/rss+productivity+tools 

If you are looking for the most popular sites in any category, than simply type in:
http://delicious/rss/popular/TAGNAME

So if you are trying to find the most popular sites related to RSS, you would type in:
http://delicious/rss/popular/RSS

In the search box, you have the choice of searching your bookmarks (or click on the tag in the sidebar), my bookmarks, your network's bookmarks, or all of delicious. If you want to limit your search to specific tags, then use the prefix “tag:”. An example, “tag:rss”.

Organize

If your tag cloud looks like a huge, disorganized mess, bundle the tags into related categories for easy access. To organize your tags into bundles, click on the “Settings” link in the top right-hand corner. From this page, click on “bundle tags” under the tags heading and start creating your own bundles. 

Find New Bookmarks

Navigate to http://del.icio.us/inbox

where you can subscribe to various tags or specific users. This is an excellent way to discover new sites that you may enjoy. Click “subscribe” at the top of most pages to add any user or any tag to your inbox—you can even use combine tags. Anytime a new post arrives that meets your criteria, it appears in your inbox. Based on the preferences you submit, you will be find new items to check out.

Other ways to find new sites:

• Popacular lists the most popular tags on delicious
• Insuggest uses your username to recommend bookmarks
  
• Melange offers a blog post (RSS it) about libraries using delicious
  
• player.icio.us lets you enter a tag from either delicious or ma.gnolia (another social bookmarking site) and watch as the most popular Web pages with that tag scroll by

Display

Visual learners may prefer FavThumb which offers a thumbnail view of your bookmarked sites. Apparently not anymore!

Share

In addition to all that, you can also share your latest del.icio.us bookmarks on your website/blog for all of your readers to enjoy. You do this using Linkrolls and Tagrolls. Linkrolls display your latest del.icio.us bookmarks while tagrolls display all of your del.icio.us tags in a tag cloud.

You can add a button to your sites so people can easily bookmark your content.

If you embed a Delicious badge in your blog, your readers can see what you bookmark.