Bing keeps rising, now 11.5%

Yes, Google is still growing (slowly). But Bing has gained more points of market share than Google in the past six months. Not just grown faster, but actually added more users than Google has added.

I also see different numbers, GA says for my blog: google 97.56% bing 1.52% yahoo 0.50%

Your site's demographic might not represent bing's demographic. In any case, a more meaningful data could be the trend of the data - is bing heading up or down in your site?

Clearly your website stats paint a clearer picture of what's going on than the combined stats of many websites.

What are your user agent stats? I bet they skew heavily toward Firefox, Chrome, and Safari with IE a minority. Tech sites attract tech audiences, and techs tend to favor more modern browsers and google. Your stats say nothing about the popularity of Bing amongst the general internet using populace.

There is a big difference between [traffic to the search engine's domain], [searches done on a search engine], and [traffic the search engine sends to other websites].

These are 3 different metrics. You can't extrapolate backwards from a website's referrers to gain knowledge of the first two metrics.

It's easily explained by either searchers having to do more searches on Bing to find a page they want to click, or Bing presenting more information within their own site so that the searcher doesn't have to click away. If either of those rates is higher than Google, then Bing can have higher search share than it will have referral share among other websites.