Dave asks, When Google has to cut its own revenue stream by enhancing search, will they do it?

Good question. Here is another: Has Google’s success at advertising slowed its innovations around search? And, How far will Google go with search engine improvements if there’s clearly no advertising money in it?

I’m not suggesting answers here. I’m just asking.

There are many things I would love to search for that Google doesn’t cover. But then, nobody does. For example, a date-range search just of blogs. Google Blogsearch does feature date-based search, with the most recent on top. But what if I want to search just in November and December of 2004? Near as I can tell, it can’t be done. (Correct me if I’m wrong. I’m glad to be.) [Later…] I am corrected by the first two comments.

I once had high hopes that Technorati would support that kind of search, but both Technorati and Google Blogsearch are playing the What’s Popular game. (For what it’s worth, I used to be on Technorati’s advisory board, but now David Sifry is gone and I’m not sure the company even has one any more.)

Anyway, it’s hard for me not to appreciate the many different ways Google lets me search for stuff. Their geographic services, for example, are amazing. So is stuff like this. But I can’t help but notice that the basic search offering has changed relatively little over the years. Is it because of the advertising? You tell me. I really don’t know.