The family is poorly understood due to their small body size and wide distribution; new genera and species are still being discovered throughout the world.

[3] Within the agriculture industry, money spiders are regarded as biological control agents against pest species like aphids and springtails.

[9] For this reason ballooning spiders have little control over where they land,[10] leading to a high mortality rate for the practice and its predominant usage by spiderlings and juveniles.

The generally larger bodied members of the subfamily Linyphiinae are commonly found in classic "bowl and doily" webs or filmy domes.

These tiny spiders (usually 3 mm or less) commonly balloon even as adults and may be very numerous in a given area on one day, only to disappear the next.

These come in an impressive array of forms including, but not limited to, grooves, tubercles, projections, bumps, lobes, and spines.

Praestigia kulczynskii has its anterior median eyes placed ventrally at the end of a long, thick projection issuing from the clypeus.

[12][13] Similarly, the pedipalps of males range from simple to complex in their design, with some possessing striking features and arrangements of palpal sclerites that are unique for a given genus and/or species.