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Browsing and Searching Google GroupsJust as with the Web, Directory, and News portions of the site, Google Groups allows you to both browse its content in directory style or search it with keywords. You can merge the two approaches by searching in a single part of the directory. And with so many newsgroups named cryptically, searching for a group is part of the browsing experience. Google organizes newsgroups by Usenet top-level address types. The largest and best-known of these is the alt. collection of newsgroups. Google Groups carries ten of these major divisions plus many minor ones that aren’t represented on the Groups home page (see Figure 4-1) but can be found by searching. Start browsing from the home page by clicking a newsgroup type. Each subsequent page lists fifty groups in alphabetical order. You can see one of these subsequent pages in Figure 4-2. It’s interesting to note that Google applies its PageRank system to evaluating the popularity and importance of newsgroups. The familiar horizontal green bars indicate how populous a newsgroup is, saving you much trial and error. However, PageRank or no PageRank, browsing is difficult. Google does its best to help you navigate through thousands of groups by providing a drop-down menu that leapfrogs ahead in the alphabetical list. That’s fine, but at this point resorting to keywords is the way to go. In fact, you can safely skip this second-level directory page entirely and start with a keyword on the home page. The benefit of launching your keyword search from the alt. page (or whichever page you’re on) is that you can restrict your search to the alt. division. The following steps describe a Google Groups search:
Figure 4-3 shows the result of this search. A few notable features of the search results page are itemized in the following sections.
Figure 4-3: A search results page in Google Groups. In addition to individual messages, Google gives you related groups. Using the group operatorNotice in Figure 4-3 how the keyword string is now presented in the search box on the results page: star trek group:alt.* This syntax is an introduction to a new search operator specific to Google Groups: the group operator. Using it forces Google to match your keyword(s) against newsgroups in one division. You can use this operator to ferret out newsgroups in minor divisions that don’t appear on Google’s home page. For example, when searching for a Windows 95 support group in the Microsoft newsgroups, this keyword string is effective: windows 95 group:microsoft.* The result of this search is illustrated in Figure 4-4. Under the Related Groups banner, there is no direct match to the keywords (windows 95) in the newsgroup names — but Google determines that win95 and windows95 (without a space) are relevant hits. Google’s capability to make smart choices on your behalf, based on comprehensive searches of content, is as pronounced in the Groups sections as in the Web search section.
Note that there’s no need for the wildcard asterisk because you’re defining the entire newsgroup name. Now if the reverse is true, and you want to eliminate results from that particular newsgroup, here’s your search string: windows 98 –group:alt.windows98 Understanding related groupsMany search results pages, typified in Figure 4-3, contain a Related groups banner under which are newsgroups that Google has determined contain relevant search results. You can see those groups represented if you scroll through all the search results. The list is for reference only; you may click any group in that list, but doing so does not carry your keyword search into that group. Instead, you merely see the display page for that group, with the most recently posted message at the top. In some cases, Google uses the wildcard in the Related groups list to indicate clusters of related newsgroups. Again, Figure 4-3 illustrates this, showing two clusters with a wildcard (*). Click the alt.startrek.* cluster to see a new page containing the complete list of groups that fulfill the wildcard. (See Figure 4-5.) Note that wildcards can be found in this list, too, representing newsgroups whose names contain yet another dot-extension — that is to say, another period followed by another word. Newsgroup names can be quite long and cryptic.
Sorting search resultsThere’s not too much to report on the subject of sorting. Search results are usually sorted by relevance, according to Google’s mysterious and profound formulas. Use the Sort by date link to switch to a chronological order of posts. The chronology goes in reverse, with the most recent result at the top of the list. Interpreting search resultsIf you flip back to Figure 4-3, you can see a typical Groups search results page. Search results contain six elements:
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