I'm evaluating comment systems and although I see disqus used in many cases I'm not sure if it is the best choice for me as I am uncertain that my site's own search system could show comments in search results.
Can built-in search or Apache Solr find comments on the site made with Disqus ?
Research I have shown so far is that Disqus has Search Engine Optimisation (SEO) -- for external search engines e.g. Google:-
But what about your own search system on your site, or using Solr for example. I'd prefer not to use Custom Google Search to search my site as I want control over how my results are shown.
As disqus also has an API there is a possibility to load the content on the server and render your own html code (e.g. with PHP). In this case, the content should be indexed by the default crawling mechanisms the common search tools use.
You can use the wordpress plugin to see if they can index the disqus comments http://www.searchblox.com/easy-faceted-search-plugin-wordpress-site
There is now disqussearch.com which supports searching by username. I could implement searching by site as well if time permits.