[TYPO3] Do I need the Site Crawler to get Indexed Search to work?

[Mike]

Marcus Biesioroff wrote:
> 
> No, pages are indexed as you 'crawling' them manually - so, just
> visiting next pages. REMEMBER that pages are ONLY indexed when no backend
> user is looged.
> 
> Of course you have to enable indexing in main template first:
> 
>   config.index_enable = 1
> 
> 

Then why isn't it working?  The site is getting lots of traffic, but 
Tools/Indexing still shows no pages.  And search results all come up blank.