A Hash Flash is a feed or collection of items around a certain theme, only they are at certain days (Monday, Tuesday, Thursday, and Sunday at 9pm EST). Tag your items by commenting on them (or can add to the description section of your listing) with the hashtag that will be used for the hash flash. The theme of that night is located on the top of the Featured Feed. Hint: there is also a schedule at the bottom of the Featured Feed so you can see what is coming up for the week. They are specific so it must be the exact hashtag. This will input your item into this specific feed. Hash flash hashtags are searchable anytime by typing the #hashtag in the top search bar for listings.