i use trufflepiggy primarily as a productivity tool doing diagnosis and research work. adding custom search pages is one of trufflepiggy's best features supporting that approach. i added dnslookup.org, whois.com, and other sites that dont do search per se, but lookup, saving time not having to copy and paste everything.

i also use trufflepiggy to help me remember good search engines i stumbled upon.
this is very helpful since bookmarking or other extensions like pocket are not suited for that category of webpages.

the new context search feature improves the usage even more, because it also works when viewing PDF's and thus it is really helpful when reading a lot of papers.