I like that it is simple to learn how powerful this tool can be for all types of searches, from general queries through complex data munging tasks with many facets within one query! It's also very easy (once you get used) since there are no learning curves involved -- just start using sphinx straight away without having any previous experiences or skills in search tools/techniques etc.. The only thing which could have been improved more would probably involve some sort if documentation as we don't really know what features do exactly exist until after trying them out ourselves by trial & error approach :). But once again - nothing major here so far except maybe lack of proper docs but then who cares? Just use your imagination :) We've successfully integrated our product into different e-commerce platforms such as Amazon / Shopify allowing us not only SEO optimization at first sight but an actual sales boost too!