I'm sure his stats can be trusted. Otherwise what's the point in having an inaccurate guide?
It would be useless as a guide. And pointless staking his reputation on it - it would make him look bad wouldn't it.
Anyway, is the fact that you feel Bobby needs to 'mark' exactly what are/aren't SE's on his guide?
Or do you need to know what a search engine is?
The web is crawling with information. That would be wonderful by itself, but the fact that you can find something in a matter of seconds is really something.
The web is more than just information now. It's a place where you can shop, invest, play games and enjoy lot's of other activities.
Basically, the web is like a library without a librarian, nor is the information in these pages guaranteed to be accurate or complete. Because anyone can put anything up on the web, well, anyone does.
You find something on the web using a Search Engine. That's a web page that contains a huge list of whatever is deemed relevant.
You can search, results are displayed. Very trendy, cool and fun to use. Fun Fun Fun.
Now, here is where confusion can set in.
Basically we have:
A SE, technically, is just a search box, where we type words into it, for it to give us our information.
We also have Directories too, which also have Search boxes.
Search Engines will do what a web designer programs them to do.
If I want one to fetch stuff from the web - no problem.
And we can have versions that only search our own sites. Ahhhhh, Directories.
These are nice to us, as they only search our little homes of information. Plus they don't mix results (or shouldn't). Making them highly accurate and in my opinion, better for searching.
Next we have portals. These are windows (links) to other parts of the web. Portals can be shopping sites, SE's, Directories, or a combination of whatever you want or need.
Yahoo is probably the finest example of this, as it's a portal, with a directory and a SE. Good idea to have a portal for your home page.Most portals will tell you exactly what they are, or at least be very obvious.
Shopping sites can have Search Engines on them, but they are more like directories than 'World' Search tools. But they search so........
Some are better than others at finding what you are after. It depends on what you are looking for.
There are 2 types of Search Engine on this planet:
General and Specialist.
Yahoo, MSN, Google, Lycos are General engines. This means they have a bot thing that scours the entire web for your info.
ZDNet or Search Engine Watch are specialist. They will only search their own databases - and not the web, although this seems to be changing these days.
I find that having a portal site as a home page, then a backup engine, just in case is a good idea.
Also have a specialist (niche engine) for real speed requirements.
That's all you really need to know about it. I think as more people do shop online, a lot of these shop sites will become proper search engines, if that's what people demand.
But some people really like their favourites to stay as they are, which isn't a bad thing really.
If something ain't broke - why fix it.