Mandatory information about my setup:

Have I searched the tickets before posting? Yes
Have I searched the forum before posting? Yes
Have I read the documentation before posting (which pages?)? Yes (not found)
Joomla! version: 2.5.19
PHP version: 5.3.3
MySQL version: 5.1.69
CComment version: 5.0.6 pro
Direct link to the page that shows the issue: http://aleksius.com/sozdanie-sajtov/artisteer/uroki-artisteer-4-0-chast-3-otzyvchivyj-dizajn


Description of my issue:
Hello. Comments on my site indexed by search engines Yandex, Google and Bing. It's good. Thank you very much. For example, the phrase in the comments (in Russian): "position-12 и position-22 не подходят, в первом случае содержание модуля выводится над" (examples in the archive). But on my site I use pagination for comments (Settings - Layout - Comments per page (10)).
I noticed that if the comment is located on the second, third and so on pages, it is not indexed by search search engines (if the comment is not on the first page for a few weeks, months). Is that so?
If yes, then I have a question. What do you think, how much can I specify for option "Comments per page"? If I specify 0, it will help me solve my problem. But how will it affect the download speed of comments?
I also interested in your opinion. If the page will contain 150-200 comments (no pagination) it will not spoil the look of the page?
Thanks in advance for your reply.