The most commonly overlooked problem is: trying to find something to "do at the last second". This spearheads that directly unlike any other service. There are a lot of services that offer generic and mostly (if not all), non-relevant discounts on random stuff, other services show you places around you. And still other services let you purchase tickets to events but that's not very useful if you don't know something is going on. Synapse streamlines this by asking you: when, theme and budget.