Where do people find a list…

Where do people find a list of app hashtags so someone like pierre4bitcoin make use of them to decide whom to follow?

#asknostr

nostr:nevent1qqs8ug2r69zt9cfxdu4s30wmh23sr4hypq5xxpd47dnpkxz07e4tg4spzpmhxue69uhkummnw3ezuamfdejsyg9ncxn2df2hmjggngfg89fnt8rvwag4r9w9capg3luqmhchna2yfspsgqqqqqqsrmmwtx